Projector control method, information processing device control method, and projector

Abstract

To provide a projector control method in which the convenience of a user is increased.SOLUTION: A first control unit 170 of a projector 100 performs: receiving selection of either a first projection surface shape or a second projection surface shape as a shape of a projection surface 10 to which image light is projected; displaying, when receiving selection of the first projection surface shape, a user interface for geometric correction for the first projection surface shape on the projection surface 10; and displaying, when receiving selection of the second projection surface shape, a user interface for geometric correction for the second projection surface shape on the projection surface 10.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a method for controlling a projector, a method for controlling an information processing apparatus, and a projector.

Background Art

[0002] Conventionally, a projector corrects the shape of an image to be displayed on a projection surface and then starts displaying the projected image. For example, the projector of Patent Document 1 discloses a correction in which an image is divided into a plurality of quadrilateral regions, vertices of each divided quadrilateral region are displayed on a projection surface, and the positions of the vertices selected by a user are moved based on a user input operation. The user selects the number of vertices that can be selected according to the shape of the projection surface and changes the size of the quadrilateral region for dividing the image.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the user does not always use a screen as the projection surface, and in some cases, an indoor wall surface or the like may be used as the projection surface. Also, the type of shape correction required varies depending on the positional relationship between the projector and the projection surface. Therefore, it is difficult for the user to select an optimal shape correction.

Means for Solving the Problems

[0005] This disclosure is a projector control method that accepts the selection of either a first projection surface shape or a second projection surface shape as the shape of the projection surface onto which image light is projected; displays a user interface for geometric correction associated with the first projection surface shape on the projection surface when the first projection surface shape is selected; and displays a user interface for geometric correction associated with the second projection surface shape on the projection surface when the second projection surface shape is selected.

[0006] This disclosure relates to a control method for an information processing device that performs the following actions: accepts the selection of either a first projection surface shape or a second projection surface shape as the shape of a projection surface onto which image light is projected; outputs geometric correction information associated with the first projection surface shape when the first projection surface shape is selected; and outputs geometric correction information associated with the second projection surface shape when the second projection surface shape is selected.

[0007] This disclosure relates to a projector comprising: an optical device; and a control unit that performs the following actions: receiving an operation to select the shape of a projection surface onto which image light is projected; when the operation to select a first projection surface shape is received, displaying a user interface for geometric correction associated with the first projection surface shape on the projection surface using the optical device; and when the operation to select a second projection surface shape is received, displaying a user interface for geometric correction associated with the second projection surface shape on the projection surface using the optical device. [Brief explanation of the drawing]

[0008] [Figure 1] A diagram showing the configuration of a projector. [Figure 2] A diagram showing the configuration of the image projection unit. [Figure 3] A diagram illustrating the installation conditions for the projector relative to the projection surface. [Figure 4] A diagram showing a user interface that supports point correction. [Figure 5]A diagram showing a user interface that supports horizontal trapezoidal distortion correction. [Figure 6] A diagram showing a user interface that supports corner projection correction. [Figure 7] A diagram showing the user interface that supports quick corner correction. [Figure 8] A diagram showing the user interface that supports quick corner correction. [Figure 9] A flowchart illustrating the operation of a projector. [Figure 10] A diagram showing a modified system configuration. [Modes for carrying out the invention]

[0009] Figure 1 is a block diagram showing the configuration of the projector 100. The projector 100 comprises an imaging unit 110, an operation reception unit 120, a remote control light receiving unit 130, an input interface 140, an image processing unit 150, an image projection unit 160, and a first control unit 170. Hereinafter, the interface will be abbreviated as I / F.

[0010] The imaging unit 110 includes an image sensor and a processing circuit, and captures an area including the projection surface 10 to generate an image. The image sensor and processing circuit are not shown in the diagram. The image sensor is a CCD (Ch a It is composed of a supercoupled device (CMOS) or a composite metal oxide semiconductor (CMOS). The processing circuit processes the signal output by the image sensor to generate the captured image.

[0011] The operation reception unit 120 is equipped with multiple operation keys for the user to give various instructions to the projector 100. 2 The control keys included in the 0 are a power key for switching the power on and off, and a menu image for making various settings. Projector 100 There is a menu key to display it. User operation reception unit 1 2 0 various operation keys one of the followingWhen [it] is operated, the operation reception unit 1 2 0 outputs an operation signal corresponding to the received operation content to the first control unit 170.

[0012] The remote control light receiving unit 130 receives an infrared signal transmitted from the remote control 5, and outputs an operation signal corresponding to the operation content indicated by the received infrared signal to the first control unit 170. The remote control 5 includes an operator for performing an operation on the user interface. The operator includes, for example, a cross key for inputting the up, down, left, and right directions, a plus button and a minus button for inputting an increase or decrease in a numerical value. The remote control 5 one of the following transmits an infrared signal corresponding to the operated operator when the operator is operated by the user.

[0013] The input I / F 140 is an interface for receiving image data, which includes a port corresponding to a standard such as HDMI and an interface circuit. HDMI is a registered trademark. The input I / F 140 is connected to an image transmission cable and receives image data supplied from the image supply device 7. The input I / F 140 outputs the received image data to the image processing unit 150.

[0014] A frame memory 155 is connected to the image processing unit 150. The image processing unit 150 expands the image data input from the input I / F 140 in the frame memory 155. The frame memory 155 is constituted by, for example, SDRAM (Synchronous Dynamic Random Access Memory).

[0015] The image processing unit 150 performs image processing such as resolution conversion processing or resizing processing, correction of distortion aberration, shape correction processing, digital zoom processing, adjustment of image color and brightness, etc. on the image data developed in the frame memory 155. The image processing unit 150 executes the image processing specified by the first control unit 170 and performs the processing using the parameters input from the first control unit 170 as necessary. Also, the image processing unit 150 can of course execute a combination of a plurality of the above image processes. The image processing unit 150 reads out the image data for which the processing has ended from the frame memory 155 and outputs the read image data to the panel drive unit 167 of the image projection unit 160.

[0016] The image processing unit 150 and the frame memory 155 are constituted by, for example, an integrated circuit. The integrated circuit includes LSI (Large Scale Integrated Circuit), ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), FPGA (Field-Programmable Gate Array), SoC (System-on-a-chip), etc. Also, an analog circuit may be included in a part of the configuration of the integrated circuit, or a configuration in which the first control unit 170 and the integrated circuit are combined may be adopted.

[0017] FIG. 2 is a diagram showing a schematic configuration of the image projection unit 160. The image projection unit 160 corresponds to an optical device. Here, the configuration of the image projection unit 160 will be described while referring to FIG. 2. The image projection unit 160 modulates the light emitted from the light source 161 to generate image light, and enlarges and projects the generated image light by the optical unit 165. The image projection unit 160 includes a light source 161, three liquid crystal panels 163R, 163G, and 163B as a light modulation device, an optical unit 165, and a panel drive unit 167. Hereinafter, when collectively referring to the three liquid crystal panels 163R, 163G, and 163B provided in the projector 100, they are denoted as the liquid crystal panel 163.

[0018] The light source 161 includes discharge-type light sources such as ultra-high pressure mercury lamps and metal halide lamps, or solid-state light sources such as light-emitting diodes and semiconductor lasers. Light emitted from the light source 161 is incident on the liquid crystal panel 163. Liquid crystal panels 163R, 163G, and 163B are each composed of transmissive liquid crystal panels in which liquid crystal is sealed between a pair of transparent substrates. Liquid crystal panel 163R modulates red light, liquid crystal panel 163G modulates green light, and liquid crystal panel 163B modulates blue light. Each liquid crystal panel has a pixel region formed therein, consisting of multiple pixels arranged in a matrix, and a driving voltage can be applied to each pixel of the liquid crystal.

[0019] The panel drive unit 167 receives image data output by the image processing unit 150. The panel drive unit 167 applies a drive voltage corresponding to the input image data to each pixel in the pixel area, setting each pixel to a light transmittance corresponding to the image information. Light emitted from the light source 161 is modulated for each pixel as it passes through the pixel areas of the liquid crystal panels 163R, 163G, and 163B, forming image light for each color corresponding to the image information. The formed image light of each color is combined for each pixel by a color synthesis optical system (not shown) to form image light representing a color image, which is then magnified and projected onto the projection surface 10 by the optical unit 165. As a result, a projected image, which is an image corresponding to the image light, is displayed on the projection surface 10.

[0020] Returning to Figure 1, we will continue to explain the configuration of projector 100. The first control unit 170 is a computer device comprising a first storage unit 180 and a first processor 190.

[0021] The first memory unit 180 is RAM (Random A The system includes Access Memory (RAM) and Read Only Memory (ROM). The RAM is used for temporary storage of various data, and the ROM stores a control program 181 for controlling the operation of the projector 100 and various setting data 183. The first storage unit 180 also temporarily stores the captured images generated by the imaging unit 110.

[0022] The first processor 190 is an arithmetic processing unit composed of a CPU (Central Processing Unit) and an MPU (Micro-Processing Unit). The first processor 190 controls program 1 81 This is executed to control each part of the projector 100. The first processor 190 may consist of a single processor or multiple processors. The first processor 190 may also consist of a System-on-a-chip (SoC) integrated with part or all of the first memory unit 180 or other circuits. The first processor 190 may also consist of a combination of a CPU that executes programs and a DSP that performs predetermined arithmetic processing. Furthermore, all the functions of the first processor 190 may be implemented in hardware, or they may be configured using programmable devices.

[0023] When the power key on the operation reception unit 120 is turned on and power is supplied to the projector 100, the first control unit 170 displays a menu screen on the projection surface 10. If the operation reception unit 120 is equipped with a display panel such as an LCD panel, the menu screen may be displayed on this display panel.

[0024] The menu screen displays selection fields for shape conditions, which are conditions related to the shape of the projection surface 10, and installation conditions, which are conditions related to the installation state of the projector 100. The shape conditions for the projection surface 10 include a shape having a convex portion, or protrusion, on part of the projection surface 10, and a shape having a concave portion, or recess, on part of the projection surface 10. Hereinafter, these shape conditions will be referred to as the "convex portion shape" and the "recessed portion shape," respectively. The convex portion shape corresponds to the first projection surface shape, and the recessed portion shape corresponds to the second projection surface shape. Furthermore, the shape requirements for the projection surface 10 include whether the screen is portable or fixed, if a screen is used as the projection surface 10. conditionThe conditions are referred to as "portable screen" and "fixed screen," respectively.

[0025] example For example, the interior wall of a house, which includes pillars, etc. Having a protruding part Used as projection surface 10 things It is expected. ,one The interior wall of a house with a recess in the part It has a depression in part Used as projection surface 10 things This is foreseeable. For example, if the interior wall of a house is used as the projection surface 10, dents may be created in the interior wall due to unintentional collisions with objects, etc.

[0026] Portable screens are retractable screens. They are equipped with a winding mechanism at the top or bottom of the screen, and are pulled out from this mechanism when in use. Fixed screens, on the other hand, are screens fixed to a wall or other surface in a room. Because portable screens are wound up by the winding mechanism, wrinkles or ripples may occur on the screen surface.

[0027] Figure 3 shows the projector 100 and projection surface 10 as viewed from above. The installation requirements for Projector 100 include "front mounting" and "angled mounting." Front mounting refers to a state in which the projector 100 is mounted in front of the projection surface 10. The front installation will be explained with reference to Figure 3. Figure 3 shows the mutually orthogonal X and Y axes. 、 The three axes of the Z-axis are shown. The X-axis corresponds to the direction of the normal to the projection surface 10, the Y-axis corresponds to the horizontal direction of the projection surface 10, and the Z-axis corresponds to the vertical direction. The dashed line in Figure 3, shown as area 11, indicates the horizontal range of the projection surface 10 onto which the projected image is projected by the projector 100. This range is called the projection area. On the projection surface 10, if point P is the position corresponding to the center of the projected light from the projection lens or the center of the projected image, then angle θ is the angle between the normal to the projection surface 10 at point P and the optical axis of the projected light. Front mounting means that, in the direction of the normal to the projection surface 10, the optical axis of the projection lens of the projector 100 and the center P in the Y-axis direction of the projection area 11 are aligned. Normal vector of projection surface 10 The angle θ formed with is within a predetermined angle range. Inside This refers to the case where the angle θ is set to, for example, a range of -10 degrees or more and +10 degrees or less. Front mounting corresponds to the first mounting state. Diagonal mounting means that the optical axis of the projection lens of the projector 100 and the center P in the Y-axis direction of the projection area 11 are aligned. Normal vector of projection surface 10 This refers to the case where the angle θ formed with the object is outside the predetermined angle range. Diagonal installation corresponds to the second installation state.

[0028] When the shape conditions and installation conditions are input, the first control unit 170 displays a user interface for geometric correction, which is associated with the input shape conditions and installation conditions, on the projection surface 10 according to the setting data 183.

[0029] When "recessed shape" is selected as the shape condition and "front installation" is selected as the installation condition, the first control unit 170 selects point correction as the geometric correction process and displays a user interface corresponding to point correction on the projection surface 10. The reason for selecting point correction as the geometric correction process is that recessed areas on the projection surface 10 can be corrected precisely using point correction.

[0030] Figure 4 shows the user interface for point correction. Point correction is a correction method that corrects partial distortion of the image projected onto the projection surface 10. In point correction, the projected image 20, divided into a grid, is displayed on the projection surface 10 as a user interface. The user selects the intersection of the grid points to be corrected by operating the directional keys on the remote control 5. The grid points G enclosed in white circles in Figure 4 indicate the grid points selected by the operation of the remote control 5. After selecting a grid point by operating the remote control 5, the user presses the directional keys on the remote control 5. In other words, the user presses the directional keys on the remote control 5 in the direction in which they want to move the selected grid point G. ni 10 Press the directional key. The first control unit 170 moves the pixels of the projected image 20 drawn at the grid point G on the liquid crystal panel 163, or the pixels of the projected image 20 drawn at the grid point G and their surrounding pixels, in the direction corresponding to the pressed directional key. The first control unit 170 continues this process as long as the directional key is pressed.

[0031] When the operation of the directional keys is completed, the first control unit 170 generates parameters that associate the pixels of the image data with the pixels of the liquid crystal panel 163 that draws the image data, and outputs the generated parameters to the image processing unit 150. The image processing unit 150 transforms the image data according to the parameters input from the first control unit 170. When performing point correction, the number of intersections can be selected from options such as "3x3", "5x5", and "9x9".

[0032] When "recessed shape" is selected as the shape condition and "diagonal installation" is selected as the installation condition, the first control unit 170 selects a geometric correction process that performs point correction after performing horizontal trapezoidal distortion correction. The first control unit 170 displays a user interface corresponding to horizontal trapezoidal distortion correction on the projection surface 10. The reason for selecting the geometric correction process described above is that attempting to eliminate trapezoidal distortion using only point correction would require correcting a large number of correction points, increasing the processing load. By performing trapezoidal distortion correction to roughly match the shape of the projected image, and then correcting the recessed areas with point correction, the processing load can be reduced.

[0033] Horizontal trapezoidal distortion correction is a process that corrects the difference in length between the left and right sides of the projected image projected onto the projection surface 10, thereby correcting the projected image to be rectangular. For example, if the projector is positioned diagonally to the projection surface 10, the lengths of the left and right sides of the projection surface 10 will be different, and the projected image will not be rectangular. Here, the left and right sides of the projected image correspond, for example, to the left and right sides of a user facing the projection surface 10.

[0034] Figure 5 shows a user interface that supports horizontal trapezoidal distortion correction. The first control unit 170, as a user interface compatible with horizontal trapezoidal distortion correction, provides a predetermined projected image 30. On projection surface 10 Display the projected image 30. This projected image 30 should be an image that allows the user to recognize the shape of the projected image that the projector 100 displays on the projection surface 10, particularly the lengths of both the left and right sides of the projected image 30. In addition, the projection surface 10 may display instructions to enter the correction amount for horizontal keystone distortion correction by operating the plus and minus buttons on the remote control 5.

[0035] The user operates the plus or minus button on the remote control 5. When the plus or minus button on the remote control 5 is operated, the first control unit 170 changes the length of the left or right side of the projected image 30 drawn on the liquid crystal panel 163. When the operation of the plus or minus button on the remote control 5 is finished, the first control unit 170 generates parameters that associate the pixels of the image data with the pixels of the liquid crystal panel 163 that draws the image data, and outputs the generated parameters to the image processing unit 150. The image processing unit 150 transforms the image data according to the parameters input from the first control unit 170.

[0036] When "convex shape" is selected as the shape condition and "front installation" is selected as the installation condition, the first control unit 170 selects corner projection correction as the geometric correction process and displays a user interface corresponding to corner projection correction on the projection surface 10. The reason for selecting corner projection correction as the geometric correction process is that by performing corner projection correction that can be adjusted according to the protrusions of the projection surface 10, the projected image can be correctly corrected even if the projection surface 10 has protrusions.

[0037] Figure 6 shows a user interface that supports corner projection correction. As shown in Figure 6, the user interface for corner projection correction displays a projected image 40 showing a list of shapes of the projection surface 10 that the projector 100 can correct. The user operates the remote control 5 to select a shape that corresponds to a protrusion on the actual projection surface 10. When one of the shapes of the projection surface 10 is selected, the first control unit 170 instructs the image processing unit 150 to perform a correction corresponding to the selected shape on the image data expanded in the frame memory 155.

[0038] When "convex shape" is selected as the shape condition and "diagonal installation" is selected as the installation condition, the first control unit 170 selects a geometric correction process that performs corner projection correction after performing horizontal keystone distortion correction. The first control unit 170 displays a user interface corresponding to horizontal keystone distortion correction on the projection surface 10. The reason for selecting the above geometric correction process is: projection surface 10 On the protrusion depending on This is because if you perform horizontal keystone correction after performing corner projection correction, you will need to perform corner projection correction again.

[0039] When "portable screen" is selected as the shape condition and "front installation" is selected as the installation condition, the first control unit 170 selects a geometric correction process that performs point correction after quick corner correction. The first control unit 170 displays a user interface corresponding to quick corner correction on the projection surface 10. The reason for selecting the geometric correction process described above is that quick corner correction allows the projected image to be aligned with all four sides of the screen. Furthermore, because portable screens can sometimes exhibit distortion within their surface, point correction, which has multiple correction points and allows for fine-tuning of distorted areas, can completely eliminate distortion.

[0040] Figure 7 shows the user interface that supports quick corner correction. In a user interface that supports quick corner correction, a selection screen 50 for selecting the corner of the projected image to be corrected is displayed on the projection surface 10. The user operates the remote control 5 to select the corner to be corrected.

[0041] Figure 8 shows the user interface that supports quick corner correction. When the angle to be corrected is selected, the first control unit 170 displays the projected image 60 on the projection surface 10. This projected image 60 only needs to be an image that allows the user to recognize the projection area, which is the area of ​​the projection surface 10 on which the projected image 60 is displayed. The user presses the directional pad corresponding to the direction in which they want to move the selected corner. The first control unit 170 moves the corner of the projected image 60 drawn on the liquid crystal panel 163 in the direction corresponding to the pressed directional pad. The first control unit 170 continues this process as long as the directional pad is pressed.

[0042] When the operation of the directional keys is completed, the first control unit 170 generates parameters that associate the pixels of the image data with the pixels of the liquid crystal panel 163 that draws the image data, and outputs the generated parameters to the image processing unit 150. The image processing unit 150 transforms the image data according to the parameters input from the first control unit 170.

[0043] When "portable screen" is selected as the shape condition and "diagonal installation" is selected as the installation condition, the first control unit 170 selects a geometric correction process that performs point correction after performing horizontal trapezoidal distortion correction. The first control unit 170 displays a user interface corresponding to horizontal trapezoidal distortion correction. The reason for selecting the geometric correction process described above is that attempting to eliminate trapezoidal distortion using only point correction would require correcting a large number of correction points, increasing the processing load. Therefore, by performing trapezoidal distortion correction to roughly match the shape of the projected image, and then correcting the recessed areas with point correction, the processing load can be reduced.

[0044] When "fixed screen" is selected as the shape condition and "front installation" is selected as the installation condition, the first control unit 170 selects frame fit processing as the geometric correction processing to be executed. For this reason, the first control unit 170 displays a user interface corresponding to frame fit processing. Since frame fit processing is performed automatically, a projected image indicating that frame fit processing is in progress is displayed on the projection surface 10. The reason for choosing frame-fit processing is that, if the projection surface 10 is a fixed screen, the projection surface 10 is flat with no indentations or protrusions, so it is only necessary to align the projected image with the projection area of ​​the projection surface 10.

[0045] When frame fitting processing is selected, the first control unit 170 causes the imaging unit 110 to image the projection surface 10 and generate an image. The first control unit 170 receives the image generated by the imaging unit 110 as input and detects the area of ​​the projection surface 10 based on the input image. Generally, when a screen is used as the projection surface 10, there is a difference in brightness values ​​between the projection area where the projected image is displayed and the background area that is adjacent to the projection area on the outside. The first control unit 170 detects the projection area based on the difference in brightness values ​​of the image and corrects the image data to match the shape of the detected projection area.

[0046] When "fixed screen" is selected as the shape condition and "diagonal installation" is selected as the installation condition, the first control unit 170 selects a correction process that performs frame fitting after performing horizontal trapezoidal distortion correction as the geometric correction process. The first control unit 170 displays a user interface corresponding to horizontal trapezoidal distortion correction. The reason for selecting the geometric correction process described above is that, when the projection surface 10 is a fixed screen, the projection surface 10 is flat with no indentations or protrusions, so it is only necessary to align the projected image to the projection area of ​​the projection surface 10. Also, if angled installation is selected as the installation condition, horizontal trapezoidal distortion will occur in the projected image, so after correcting the horizontal trapezoidal distortion, the projection area of ​​the projection surface 10 is adjusted. to Perform a coordinated action.

[0047] In addition to the above conditions, the installation conditions for the projector 100 also include "close-proximity installation," in which the projector 100 is installed such that the distance between the projection lens of the projector 100 and the projection surface 10 is within a predetermined distance. Close-proximity installation corresponds to the third installation state. Close-proximity installation is a front installation, and the distance between the projection surface and the lens of the projector 100 is closer than the distance between the projection surface and the lens of the projector 100 that would be assumed in a front installation. The distance between the projection lens and the projection surface 10 in close-proximity installation can be set to, for example, within 2m.

[0048] In the case of close-proximity installation, the distance between the projection lens of the projector 100 and the projection surface 10 will be within a predetermined range. In other words, the projection lens can be used to specify the range of the projection surface 10 onto which the projected image will be projected. Therefore, The first control unit 170 is: Before shipping the projector 100, a geometric correction calibration is performed on the projector 100, and the parameters generated by the calibration are stored in the first storage unit 180. If proximity installation is selected as the installation condition, the first control unit 170 performs geometric correction processing using the parameters stored in the first storage unit 180, and then selects point correction. The first control unit 170 displays a user interface corresponding to point correction on the projection surface 10. The reason for selecting the geometric correction process described above is that by performing geometric correction for close-range placement in advance, the approximate shape of the projected image is matched, and then the user can correct any recessed areas on the projection surface using point correction, thereby reducing the processing load.

[0049] Figure 9 is a flowchart showing the operation of projector 100. The operation of projector 100 will be explained with reference to the flowchart shown in Figure 9. When the power to the projector 100 is turned on (step S1) and the projector starts up, the first control unit 170 displays a menu screen on the projection surface 10 (step S2). This menu screen allows the user to select shape conditions and installation conditions using the remote control 5.

[0050] Next, the first control unit 170 determines whether or not it has received the selection of shape conditions and installation conditions (step S3). If the first control unit 170 has not received the selection of shape conditions and installation conditions (step S3 / NO), it waits until it receives the selection of shape conditions and installation conditions.

[0051] When the first control unit 170 receives the selection of shape conditions and installation conditions (step S3 / YES), it determines whether the received installation state is a close-proximity installation (step S4). If the received installation status is a close-proximity installation (step S4 / YES), the first control unit 170 performs geometric correction processing using the parameters stored in the first storage unit 180 (step S5). When the geometric correction processing is completed, the first control unit 170 displays a user interface for geometric correction processing corresponding to close-proximity installation on the projection surface 10 (step S6).

[0052] Furthermore, if the received installation status is not a close-proximity installation (step S4 / NO), the first control unit 170 displays a user interface for geometric correction processing corresponding to the received shape conditions and installation conditions on the projection surface 10 (step S6).

[0053] Next, the first control unit 170 determines whether or not it has received an operation from the remote control 5 (step S7). The user inputs an operation from the remote control 5 to execute the selected geometric correction process. For example, if the selected geometric correction process is quick corner correction, the user selects the corner to be corrected and presses the directional key in the direction to move the selected corner. If the first control unit 170 has not received an operation from the remote control 5 (step S7 / NO), it waits until it receives an operation from the remote control 5.

[0054] When the first control unit 170 receives an operation from the remote control 5 (step S7 / YES), it executes a geometric correction process based on the received operation (step S8). The first control unit 170 then determines whether or not there is a geometric correction process to be executed next (step S9). That is, it determines whether or not one of several geometric corrections, such as quick corner correction and point correction, has been selected as the geometric correction process.

[0055] The first control unit 170 terminates this processing flow if there is no geometric correction process to be executed next (step S9 / NO). If there is a geometric correction process to be executed next (step S9 / YES), the first control unit 170 displays a user interface corresponding to the geometric correction process to be executed next (step S10).

[0056] Next, the first control unit 170 determines whether or not it has received an operation from the remote control 5 (step S11). The user inputs an operation from the remote control 5 to execute the selected geometric correction process. For example, if the geometric correction process is point correction, the user selects the grid point G to be corrected using the remote control 5 and presses the directional key corresponding to the direction in which they want to move the selected grid point G. If the first control unit 170 has not received an operation from the remote control 5 (step S11 / NO), it waits until it receives an operation from the remote control 5.

[0057] When the first control unit 170 receives an operation from the remote control 5 (step S11 / YES), it performs geometric correction processing based on the received operation (step S12) and terminates this processing flow.

[0058] As described above, the projector 100 of this embodiment includes a first control unit 170 that performs the following processing. The first control unit 170 accepts the selection of either a first projection surface shape or a second projection surface shape as the shape of the projection surface 10 onto which the image light is projected. When the first control unit 170 receives a selection of the first projection surface shape, it displays a user interface for geometric correction associated with the first projection surface shape on the projection surface 10. Furthermore, when the first control unit 170 receives a selection of the second projection surface shape, it displays a user interface for geometric correction associated with the second projection surface shape on the projection surface 10.

[0059] With this configuration, by selecting either the first projection surface shape or the second projection surface shape as the shape of the projection surface 10, a user interface for geometric correction corresponding to the selected first or second projection surface shape is displayed. Therefore, the user can have the projector 100 perform geometric correction corresponding to the shape of the projection surface 10. If the user selects a geometric correction that does not correspond to the shape of the projection surface 10, the distortion of the projected image will be maintained, and a different geometric correction will have to be performed again, thus reducing the time required for geometric correction.

[0060] The first control unit 170 accepts a selection of either a first installation state or a second installation state as the installation state of the projector 100. When the first control unit 170 receives a selection of a first installation state and a first projection surface shape, it displays a user interface for geometric correction associated with the first installation state and the first projection surface shape on the projection surface 10. Furthermore, when the first control unit 170 receives a selection of a first installation state and a second projection surface shape, it displays a user interface for geometric correction associated with the first installation state and the second projection surface shape on the projection surface 10. Furthermore, when the first control unit 170 receives a selection of the second installation state and the first projection surface shape, it displays a user interface for geometric correction associated with the second installation state and the first projection surface shape on the projection surface 10. Furthermore, when the first control unit 170 receives a selection of the second installation state and the second projection surface shape, it displays a user interface for geometric correction associated with the second installation state and the second projection surface shape on the projection surface 10.

[0061] With this configuration, by selecting the shape of the projection surface 10 and the installation state of the projector 100, a user interface for geometric correction corresponding to the selected shape and installation state is displayed. Therefore, the user can have the projector 100 perform geometric correction corresponding to the shape of the projection surface 10 and the installation state of the projector 100.

[0062] The first control unit 170 accepts the selection of close-proximity installation as the installation state of the projector 100. When the first control unit 170 accepts the selection of close-proximity installation, it performs geometric correction processing according to correction conditions associated with the pre-set close-proximity installation state. In the close-proximity installation state, the distance between the projection surface 10 and the projection lens of the projector satisfies a predetermined condition.

[0063] With this configuration, by selecting "close-proximity installation" as the installation state for projector 100, a portion of the geometric correction processing corresponding to the close-proximity installation state can be performed by projector 100 before any user interface operations are performed.

[0064] The first projection surface shape is one in which the projection surface 10 includes a convex portion, and the second projection surface shape is one in which the projection surface 10 includes a concave portion.

[0065] With this configuration, if the projection surface 10 has a shape that includes a convex portion, or a shape that includes a concave portion, the projector 100 can be made to perform geometric correction processing corresponding to the shape of the projection surface 10.

[0066] The first installation state involves the optical axis of the projection lens of the projector and the projection surface 10 Normal vector The angle formed with is within a predetermined range. Inside The first installation state is one in which the angle between the optical axis of the projection lens and the projection surface 10 is greater than a preset range.

[0067] This configuration allows the projector 100 to perform geometric correction processing corresponding to its installation state.

[0068] [Differentiation] Figure 10 is a block diagram showing a modified system configuration. In the embodiment described above, the first control unit 170 of the projector 100 controls the display of a user interface on the projection surface 10 that corresponds to the shape conditions and installation conditions received by the remote control 5. In this modified version, the projector 100 and an information processing device 300 are provided, and the second control unit 330 of the information processing device 300 receives the shape conditions and installation conditions and notifies the projector 100 of the geometric correction processing information corresponding to the received shape conditions and installation conditions.

[0069] The modified projector 100 shown in Figure 10 includes a first wireless interface 200. The first wireless interface 200 includes an interface circuit that supports short-range wireless communication standards such as Wi-Fi and Bluetooth. Wi-Fi and Bluetooth are registered trademarks.

[0070] The information processing device 300 includes a second wireless interface 310, a touch panel 320, and a second control unit 330. The information processing device 300 can be, for example, a smartphone, a tablet-type personal computer, a notebook-type personal computer, or a desktop-type personal computer.

[0071] The second wireless interface (I / F310) is equipped with an interface circuit that supports short-range wireless communication standards such as Wi-Fi and Bluetooth. The touch panel 320 includes a display panel such as an LCD panel and a touch sensor, and outputs coordinate information indicating the position of the display panel touched by the user to the second control unit 330.

[0072] The second control unit 330 comprises a second storage unit 340 and a second processor 350. The second storage unit 340 includes RAM and ROM. The RAM is used for temporary storage of various data, and the ROM stores control programs 341 for controlling the operation of the information processing device 300 and setting data 343. The second processor 350 is a processing unit composed of a CPU and an MPU.

[0073] The second control unit 330 displays a menu screen on the touch panel 320 and accepts selections of shape conditions and installation conditions. When the second control unit 330 receives the selection of shape conditions and installation conditions, it adjusts according to the setting data 343 to the received shape conditions and installation conditions. handle Select the geometric correction process. The second control unit 330 transmits the information of the selected geometric correction process to the projector 100. When the first control unit 170 of the projector 100 receives geometric correction processing information from the information processing device 300, it displays the user interface for the geometric correction processing indicated by the received information on the projection surface 10.

[0074] The second control unit 330 of the information processing device 300 performs the following processing. The second control unit 330 accepts the selection of either the first projection surface shape or the second projection surface shape as the shape of the projection surface 10 onto which the image light is projected. Furthermore, when the second control unit 330 receives a selection of the first projection surface shape, it outputs geometric correction information associated with the first projection surface shape to the projector 100. Furthermore, when the second control unit 330 receives a selection of the second projection surface shape, it outputs geometric correction information associated with the second projection surface shape to the projector 100.

[0075] With this configuration, by selecting either the first projection surface shape or the second projection surface shape as the shape of the projection surface 10, a user interface for geometric correction corresponding to the selected first or second projection surface shape is displayed. Therefore, the user can have the projector 100 perform geometric correction corresponding to the shape of the projection surface 10. If the user selects a geometric correction that does not correspond to the shape of the projection surface 10, the distortion of the projected image will be maintained, and a different geometric correction will have to be performed again, thus reducing the time required for geometric correction.

[0076] The embodiments described above are preferred embodiments of the present invention. However, the invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, in the embodiment described above, a case was described in which the selection of shape conditions and installation conditions is accepted. However, if, for example, the projector 100 is assumed to be installed facing the projection surface 10, then only the selection of shape conditions may be accepted. When "recessed shape" is selected as the shape condition, the first control unit 170 displays a user interface corresponding to point correction on the projection surface 10. Furthermore, if "convex shape" is selected as the shape condition, the first control unit 170 displays a user interface corresponding to corner projection correction on the projection surface 10. Furthermore, when "portable screen" is selected as the shape condition, the first control unit 170 selects quick corner correction and point correction as geometric correction processing and displays a user interface corresponding to quick corner correction on the projection surface 10. Furthermore, if "fixed screen" is selected as the shape condition, the first control unit 170 displays a user interface corresponding to frame fit correction on the projection surface 10.

[0077] If proximity installation is selected, and geometric correction processing is performed according to pre-set correction conditions, a menu screen may be displayed to accept selection of shape conditions and installation conditions. The first control unit 170 displays a user interface for performing geometric correction corresponding to the selected shape conditions and installation conditions.

[0078] Furthermore, the functional components of the projector 100 shown in Figures 1 and 10 represent functional configurations, and the specific implementation form is not particularly limited. In other words, it is not necessarily required that hardware corresponding to each functional component be implemented individually, and it is certainly possible to have a configuration in which a single processor executes a program to realize the functions of multiple functional components. Also, some of the functions realized by software in the above embodiment may be realized by hardware, and some of the functions realized by hardware may be realized by software. In addition, the specific detailed configuration of other parts of the projector can also be arbitrarily changed without departing from the spirit of the present invention.

[0079] Furthermore, the processing units in the flowchart shown in Figure 9 are divided according to their main processing content in order to facilitate understanding of the processing of the projector 100. The present invention is not limited by the way the processing units are divided or named as shown in the flowchart of Figure 9. In addition, the processing of the first control unit 170 can be further divided into more processing units depending on the processing content, or it can be divided so that one processing unit includes even more processing. Also, the processing order in the flowchart above is not limited to the example shown.

[0080] Furthermore, when the control method for the projector is implemented using the computer provided in the projector 100, the program to be executed by this computer can be configured as a recording medium or a transmission medium for transmitting this program. The same applies when the control method for the information processing device is implemented using the computer provided in the information processing device 300. Magnetic, optical, or semiconductor memory devices can be used as recording media. Specifically, portable or fixed recording media such as flexible disks, HDDs (Hard Disk Drives), CD-ROMs, DVDs, Blu-ray Discs, magneto-optical disks, flash memory, and card-type recording media can be used. In addition, the above recording media may be the internal storage device R of the server device. A Non-volatile storage devices such as M-ROMs, ROMs, and HDDs may also be used. Blu-ray is a registered trademark.

[0081] Furthermore, although the above embodiment illustrates a light modulation device equipped with a liquid crystal panel 163, the liquid crystal panel 163 may be a transmissive liquid crystal panel or a reflective liquid crystal panel. The light modulation device may also use a digital mirror device instead of the liquid crystal panel 163. Alternatively, a configuration combining a digital mirror device and a color wheel may be used. In addition, the light modulation device may employ a configuration capable of modulating light emitted from a light source, in addition to the liquid crystal panel and digital mirror device.

[0082] Furthermore, although the above embodiment illustrates an information processing device 300 equipped with a touch panel 320, the touch panel 320 may consist of a liquid crystal panel or display and an operating device (not shown) such as a keyboard or mouse. Also, the first wireless I / F 200 and the second wireless I / F 310 may be interface circuits compatible with wired communication standards. [Explanation of Symbols]

[0083] 5…Remote control, 7…Image supply device, 10…Projection surface, 11…Range, 11…Projection area, 20, 30, 40, 60…Projected image, 50…Selection screen, 100…Projector, 110…Imaging unit, 120…Operation reception unit 、1 30...Remote control light receiver, 140...Input I / F, 150...Image processing unit, 155...Frame memory, 160...Image projection unit, 161...Light source, 163, 163R, 163G, 163B...Liquid crystal panel, 165...Optical unit, 167...Panel drive unit, 170...First control unit 、1 80...First memory unit, 181...Control program, 183...Setting data, 190...First processor, 200...First wireless interface, 300...Information processing device, 310...Second wireless interface, 320...Touch panel, 330...Second control unit, 340...Second memory unit, 341...Control program, 343...Setting data, 350...Second processor, G...Grid point, P...Center.

Claims

1. When a first projection surface shape is selected as the shape of the projection surface onto which image light is projected, and a first installation state is selected as the installation state of the projector, a user interface for geometric correction associated with the first projection surface shape and the first installation state is displayed on the projection surface. When the first projection surface shape is selected as the shape of the projection surface, and the second installation state is selected as the installation state of the projector, a user interface for geometric correction associated with the first projection surface shape and the second installation state is displayed on the projection surface. When the second projection surface shape is selected as the shape of the projection surface, and the first installation state is selected as the installation state of the projector, a user interface for geometric correction associated with the second projection surface shape and the first installation state is displayed on the projection surface. When the second projection surface shape is selected as the shape of the projection surface, and the second installation state is selected as the installation state of the projector, a user interface for geometric correction associated with the second projection surface shape and the second installation state is displayed on the projection surface. If a third installation state is selected as the installation state of the projector, geometric correction processing is performed according to the correction conditions associated with the third installation state. After performing the geometric correction process according to the correction conditions, the system accepts the selection of either the first projection surface shape or the second projection surface shape as the shape of the projection surface. Execute, The third installation state is the same as the first installation state, and the distance between the projection surface and the projection lens of the projector is shorter than a preset distance. The first projection surface shape is such that the projection surface includes a convex portion. The second projection surface shape is such that the projection surface includes a recess. How to control a projector.

2. The first installation state is an installation state in which the angle between the optical axis of the projection lens of the projector and the normal to the projection surface is within a predetermined range. The second installation state is an installation state in which the angle between the optical axis of the projection lens and the normal of the projection surface is greater than the preset range. A method for controlling a projector according to claim 1.

3. When a first projection surface shape is selected as the shape of the projection surface onto which image light is projected, and a first installation state is selected as the installation state of the projector, the projector displays a user interface for geometric correction associated with the first projection surface shape and the first installation state on the projection surface. When the first projection surface shape is selected as the shape of the projection surface, and the second installation state is selected as the installation state of the projector, the projector displays a user interface for geometric correction associated with the first projection surface shape and the second installation state on the projection surface. When the second projection surface shape is selected as the shape of the projection surface, and the first installation state is selected as the installation state of the projector, the projector displays a user interface for geometric correction associated with the second projection surface shape and the first installation state on the projection surface. When the second projection surface shape is selected as the shape of the projection surface, and the second installation state is selected as the installation state of the projector, the projector displays a user interface for geometric correction associated with the second projection surface shape and the second installation state on the projection surface. If a third installation state is selected as the installation state of the projector, geometric correction processing is performed according to the correction conditions associated with the third installation state. After performing the geometric correction process according to the correction conditions, the system accepts the selection of either the first projection surface shape or the second projection surface shape as the shape of the projection surface. Execute, The third installation state is the same as the first installation state, and the distance between the projection surface and the projection lens of the projector is shorter than a preset distance. The first projection surface shape is such that the projection surface includes a convex portion. The second projection surface shape is such that the projection surface includes a recess. A method for controlling an information processing device.

4. Optical devices and The system accepts the operation of selecting the shape of the projection surface onto which the image light is projected, When a first projection surface shape is selected as the shape of the projection surface onto which the image light is projected, and a first installation state is selected as the installation state of the projector, a user interface for geometric correction associated with the first projection surface shape and the first installation state is displayed on the projection surface using the optical device. When the first projection surface shape is selected as the shape of the projection surface, and the second installation state is selected as the installation state of the projector, a user interface for geometric correction associated with the first projection surface shape and the second installation state is displayed on the projection surface using the optical device. When the second projection surface shape is selected as the shape of the projection surface, and the first installation state is selected as the installation state of the projector, a user interface for geometric correction associated with the second projection surface shape and the first installation state is displayed on the projection surface using the optical device. When the second projection surface shape is selected as the shape of the projection surface, and the second installation state is selected as the installation state of the projector, a user interface for geometric correction associated with the second projection surface shape and the second installation state is displayed on the projection surface using the optical device. If a third installation state is selected as the installation state of the projector, geometric correction processing is performed according to the correction conditions associated with the third installation state. After performing the geometric correction process according to the correction conditions, the system accepts the selection of either the first projection surface shape or the second projection surface shape as the shape of the projection surface. A control unit that performs the following, The third installation state is the same as the first installation state, and the distance between the projection surface and the projection lens of the projector is shorter than a preset distance. The first projection surface shape is such that the projection surface includes a convex portion. The second projection surface shape is such that the projection surface includes a recess. projector.

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