Image processing device and image processing system

Abstract

The purpose of the present invention is to provide a video processing device and a video processing system capable of synthesizing and displaying a plurality of videos on a single screen in accordance with requirements of a user. The present invention is provided with: a synthesis processing unit for configuring a first video based on a first video signal in a screen and configuring a second video based on a second video signal different from the first video signal in the screen; generating a composite image signal obtained by compositing a first image and a second image so as to transmit the first image included in a designated area in the screen; and a memory that stores transmission control data that specifies the designated area and shows the transmission mode of the first image in the designated area.

Description

Technical Field

[0001] The present invention relates to an image processing device for synthesizing a plurality of image signals and an image processing system comprising the image processing device. Background Art

[0002] Currently, as an electronic device for assisting vehicle driving, an image processing system has been commercialized. The image processing system uses multiple cameras to capture the front, rear, and sides of the vehicle, and synthesizes the images captured by each camera and displays them on a display installed on the dashboard or in the rearview mirror.

[0003] As such an image processing system, the following display control device is proposed (see FIG. 26, FIG. 27, etc. of Patent Document 1): different cameras are used to respectively photograph the rear, right rear, and left rear of the vehicle, and the wide-range rear image obtained by seamlessly synthesizing the photographic images is displayed on the rearview mirror. In the display control device, a portion with low importance for driving operation is detected from the synthesized image, and the portion is subjected to "blur processing" to improve the visibility of the portion with high importance.

[0004] In addition, as an image processing system as described above, the following blind spot image display device is proposed (for example, refer to Patent Document 2): using two cameras respectively provided at the left and right corners of the front bumper of the vehicle to capture the blind spot areas respectively existing on the right and left sides in front of the vehicle, one blind spot area is displayed on the right half of the screen of the vehicle-mounted monitor, and the other blind spot area is displayed on the left half of the screen. According to the blind spot image display device, the driver can confirm the conditions of the blind spot areas at two different places (the right and left sides in front of the vehicle) by looking at the screen of the vehicle-mounted monitor.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: WO2019 / 111307

[0008] Patent Document 2: Japanese Patent Application Publication No. 2003-127772 Summary of the invention

[0009] Problem that the invention aims to solve

[0010] However, the two photographic images described in Patent Document 2 are images taken from the vehicle at the same time, and therefore sometimes have similar patterns, brightness, and hues. Therefore, if two discontinuous photographic images are displayed together in one screen, as in the blind spot image display device described in Patent Document 2, the boundary between the photographic images becomes blurred.

[0011] Furthermore, it is desirable that when a plurality of such photographed images for driving assistance are displayed in a linked manner on one screen, the display size of each photographed image can be changed.

[0012] Therefore, an object of the present invention is to provide an image processing device and an image processing system that can synthesize a plurality of images and display them on a single screen in a manner that meets the user's requirements.

[0013] Solutions for solving problems

[0014] The image processing device involved in the present invention includes: a synthesis processing unit, which generates a synthetic image signal obtained by synthesizing the first image and the second image in a manner that allows the first image included in a specified area in the screen to be transmitted, in order to configure a first image based on a first image signal in a screen and configure a second image based on a second image signal different from the first image signal in the screen; and a memory, which stores transmission control data that specifies the specified area and shows the transmission method of the first image in the specified area.

[0015] The image processing system according to the present invention includes: a first camera that outputs a first image signal representing a captured image; a second camera that outputs a second image signal representing the captured image; a display device having a single screen; a synthesis processing unit that generates a synthesized image signal obtained by synthesizing the first image and the second image in a manner that transmits the first image included in a designated area in the screen, in order to arrange a first image based on the first image signal in the screen and arrange a second image based on a second image signal different from the first image signal in the screen; a memory that stores transmission control data that specifies the designated area and shows the transmission method of the first image in the designated area; and a data change control unit that, when receiving the transmission control data for rewriting and a data change command, overwrites the transmission control data stored in the memory with the transmission control data for rewriting.

[0016] Effects of the Invention

[0017] In the present invention, in order to display a first image based on a first image signal on a screen and to arrange and display a second image based on a second image signal in a designated area of ​​the screen, a composite signal obtained by synthesizing the first and second images is generated as follows. That is, transmission control data that specifies the designated area and shows the transmission method of the first image in the designated area is stored in a memory in advance, and a composite image signal is generated by transmitting the first image included in the designated area in the screen according to the transmission control data read from the memory to synthesize the first image and the second image.

[0018] According to the above configuration, by changing the content of the transmission control data stored in the memory, the size of the second image displayed in a designated area of ​​the screen displaying the first image and the shape of the boundary between the first and second images can be changed to a size and shape as requested by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 1 is a block diagram showing the structure of an image processing system 100 as a first embodiment of the image processing system according to the present invention.

[0020] Figure 2 1 is a diagram showing an example of installation positions of the cameras 10a and 10b and the display device 30 in a vehicle.

[0021] Figure 3A It is a diagram showing an example of the form of the screen of the display device 30.

[0022] Figure 3B 1 is a diagram showing an example of the form of an image region fa cut out from an image Fa represented by a photographic image signal Va.

[0023] Figure 3C This is a diagram showing an example of the form of an image region fb cut out from an image Fb represented by a captured image signal Vb.

[0024] Figure 4 2 is a diagram showing an example of the data format of the transmission control data TD.

[0025] Figure 5 1 and 2 are diagrams showing a method of combining the images GA and GB by the combining processing unit 23 .

[0026] Figure 6 It is shown based on Figure 4 1 is a diagram showing a display mode of images GA and GB which are synthesized and displayed on the screen of the display device 30 based on the transmission control data TD.

[0027] Figure 7 2 is a diagram showing an example of the data format of the transmission control data TD.

[0028] Figure 8 It is shown based on Figure 7 1 is a diagram showing a display mode of images GA and GB which are synthesized and displayed on the screen of the display device 30 according to the transmission control data TD.

[0029] Fig. 9A 1 is a diagram showing another example of the display form of the images GA and GB that are compositely displayed on the screen of the display device 30 .

[0030] Fig. 9B 1 is a diagram showing still another example of the display form of the images GA and GB that are compositely displayed on the screen of the display device 30 .

[0031] Fig.10 1 is a block diagram showing a configuration of an image processing system 100A as a second embodiment of the image processing system according to the present invention.

[0032] Fig.11A It is a diagram showing an example of the transmission control data OSD.

[0033] Fig. 11B 1 is a diagram showing an example of a video signal VTd obtained by adding a “00h” region indicating black as a transmission region to the video signal VTb indicating the video GB.

[0034] Fig. 11C The diagram shows a display image obtained by connecting the image GB represented by the image signal VTd and the image GA represented by the image signal VTa.

[0035] Fig.12 This is a diagram showing an example of the structure of a substrate module that implements the image processing device 20 (20A).

[0036] Fig.13 This is a diagram showing another example of the structure of a substrate module that implements the image processing device 20 (20A).

[0037] Fig.14 It is shown Fig.13 FIG. 2 is a diagram showing a modified example of the structure of the substrate module shown. DETAILED DESCRIPTION

[0038] [Example 1]

[0039] Figure 1 1 is a block diagram showing a configuration of an image processing system 100 mounted on a vehicle as an example of the image processing system according to the present invention.

[0040] The image processing system 100 includes cameras 10 a and 10 b , an image processing device 20 , and a display device 30 .

[0041] The camera 10a is, for example, Figure 2 As shown in the figure, the image processing device 20 is provided at the rear of the vehicle, outputs a captured image signal Va representing an image captured at the rear of the vehicle, and supplies the captured image signal Va to the image processing device 20 .

[0042] The camera 10b is, for example, Figure 2 As shown in the figure, the left side rearview mirror Ms provided on the vehicle outputs a captured image signal Vb representing an image captured at the left rear of the vehicle, and supplies the captured image signal Vb to the image processing device 20 .

[0043] The operation device 11 is constituted by, for example, a smartphone, and wirelessly transmits to the image processing device 20 rewriting transmission control data generated by a user operation and a data change command for prompting a change to the rewriting transmission control data.

[0044] The image processing device 20 includes cutting units 21 a and 21 b , a memory 22 , a synthesis processing unit 23 , and a data change control unit 24 .

[0045] The cropping unit 21 a cuts out an image region having an aspect ratio and a number of dots equal to those of the screen of the display device 30 from the image of the rear of the vehicle represented by the captured image signal Va.

[0046] For example, in the screen of the display device 30, Figure 3A As shown

[0047] Horizontal direction: W (W is an integer) points

[0048] Vertical direction: Y (Y is an integer) points

[0049] In the case of a resolution of Figure 3B As shown, an image area fa having W dots in the horizontal direction and Y dots in the vertical direction is cut out from the image Fa represented by the photographic image signal Va. Then, the cutting unit 21a supplies the image signal representing the image GA in the image area fa in the photographic image signal Va to the synthesis processing unit 23 as the image signal VTa.

[0050] The cropping unit 21 b cuts out an image region having a predetermined number of dots in the horizontal direction and a number of dots in the vertical direction equal to the number of dots in the vertical direction of the screen of the display device 30 from the image of the left rear of the vehicle represented by the captured image signal Vb.

[0051] For example, Figure 3CAs shown, the cutting unit 21b cuts out an image region fb having X (X is an integer less than W) points in the horizontal direction and Y points in the vertical direction from the image Fb represented by the photographic image signal Vb. Then, the cutting unit 21b supplies the image signal representing the image GB in the image region fb in the photographic image signal Vb to the synthesis processing unit 23 as the image signal VTb.

[0052] The memory 22 is a nonvolatile semiconductor memory such as a flash memory, and stores transmission control data TD used when the video signal VTa and the video signal VTb are transmission-synthesized.

[0053] Figure 4 It is a diagram showing an example of the format of the transmission control data TD.

[0054] The transmission control data TD is obtained by Figure 3A Each point in the screen of the display device 30 shown in FIG. 1 (row 1 to row Y×column 1 to column W) represents the transmittance at that point, and each point data piece represents the transmittance of the image signal VTa when the image signal VTa and VTb are transmittance synthesized. Figure 4 In the example shown, the transmittance is represented by 4 bits (hexadecimal). For example, when the dot data piece shows "F", it means the transmittance is 100%, when it shows "8", it means the transmittance is 50%, and when it shows "0", it means the transmittance is 0%. In addition, at the time of shipment, as the transmittance control data recommended by the manufacturer, for example, Figure 4 The contents shown are the transmission control data TD of the initial state.

[0055] The memory 22 reads the above-mentioned transmission control data TD in response to power-on, and supplies the transmission control data TD to the synthesis processing unit 23 .

[0056] When receiving the rewrite transmission control data and the data change command wirelessly transmitted from the operating device 11, the data change control unit 24 updates the transmission control data by performing write access to the memory 22 to overwrite the contents of the transmission control data stored in the memory 22 with the received rewrite transmission control data.

[0057] The synthesis processing unit 23 generates, as a synthesized video signal VMX, a signal obtained by synthesizing the video signal VTa and the video signal VTb so that the video signal VTa is transmitted at a transmittance based on the transmittance control data TD.

[0058] For example, in the area where the dot data piece represented by the transmission control data TD indicates "F", the transmittance of the image signal VTa is 100%, so the synthesis processing unit 23 directly uses the image signal VTb as the synthesized image signal VMX. In addition, in the area where the dot data piece indicates "8", the transmittance of the image signal VTa is 50%, so the synthesis processing unit 23 synthesizes the image signal VTa and the image signal VTb in such a way that the transmittance of the image signal VTa is set to 50%, and the signal obtained is used as the synthesized image signal VMX. In addition, in the area where the dot data piece indicates "0", the transmittance of the image signal VTa is 0%, that is, it is non-transmissive, so the synthesis processing unit 23 directly uses the image signal VTa as the synthesized image signal VMX.

[0059] The display device 30 is, for example, Figure 2 The electronic interior rearview mirror installed in the vehicle compartment as shown in the figure has the same Figure 3A The display device 30 displays the image GA behind the vehicle captured by the camera 10a based on the synthetic image signal VMX. Figure 6 As shown in the figure, the image GB of the left rear of the vehicle captured by the camera 10b is displayed on the screen of the vehicle itself in the designated area designated at the left end of the screen.

[0060] Furthermore, in the video processing device 20 , the size of the video GB displayed on the screen of the display device 30 and the shape of the boundary between the video GA and the video GB can be set using the content of the transmission control data TD.

[0061] For example, in Figure 4 In the transmission control data TD shown, each dot data piece in the region of the 1st row to the Yth row×(X+1)th column to the Wth column where the image GA is displayed on the screen of the display device 30 is "0" indicating a transmittance of 0%. Figure 4 In the transmission control data TD shown, each point data piece in the region (the region surrounded by a dot-dashed line) where the image GB is synthesized is "F" indicating a transmittance of 100%, or "0" indicating a transmittance of 0%. Figure 4 In the rectangular area surrounded by a dashed line, each point data piece included in the area of ​​the lower right corner surrounded by a concave arc line shows "0", and all point data pieces included in the other areas show "F".

[0062] exist Figure 4 In the transmission control data TD shown in FIG. 1 , the area (specified area) where the image GB is displayed in the screen of the display device 30 is specified by indicating the dot data piece "F" indicating a transmittance of 100%. Figure 5As shown, the image GB is synthesized into [row 1 to row Y] × [column 1 to column X], as shown in FIG. Figure 6 As shown in FIG. 1 , the image GB is displayed in a designated area corresponding to the dot data set "F" indicating a transmittance of 100%. At this time, the boundary br between the image GA and the image GB is formed in a straight line from the top of the screen to the vicinity of the center, and is formed in an R shape in the section from the vicinity of the center to the bottom.

[0063] Furthermore, depending on the content of the transmission control data TD, the boundary between the images GA and GB displayed on the display device 30 can also be made into a band-like form having a width.

[0064] Figure 7 FIG. 2 is a diagram showing another example of the format of the transmission control data TD completed in view of this point.

[0065] exist Figure 7 In the transmission control data TD shown, in the region where the image GB is synthesized (the region surrounded by a dot-dashed line), the values ​​of the dot data pieces in the columns adjacent to the dot data piece "0" indicating a transmittance of 0% are "8" indicating a transmittance of 50%, and the values ​​of the other dot data pieces are the same as Figure 4 The transmission control data TD shown are the same.

[0066] Therefore, according to Figure 7 The transmission control data TD shown in FIG. 1 has a band-shaped boundary bbr having a width corresponding to the number of dot data pieces "8" indicating a transmittance of 50% adjacent in the horizontal direction. Figure 8 As shown, it is displayed on the screen of the display device 30 as the boundary between the images GA and GB.

[0067] In this way, the boundary br between the images GA and GB can be set to, for example, Fig. 9A A straight line display as shown, or Fig. 9B As shown, change the display size of the image GB to Figure 6 The area of ​​the 1st row to the Yth row×the 1st column to the Xth row shown is the narrow 1st row to the Yth row×the 1st column to the (X-3)th row.

[0068] That is, in the initial state after leaving the factory, for example, based on Figure 4 The transmission control data TD shown is used as follows Figure 6 The images GA and GB are displayed on the screen of the display device 30 in the manner shown. Then, the user can change the transmission control data TD by using the operating device 11. Figure 8 , Fig. 9A or Fig. 9BAs shown in the figure, the size in the horizontal direction of the image GB displayed on the screen of the display device 30 and the shape of the boundary between the images GA and GB are changed to the form desired by the user.

[0069] [Example 2]

[0070] Fig.10 1 is a block diagram showing a configuration of an image processing system 100A as another example of the image processing system according to the present invention.

[0071] The image processing system 100A and Figure 1 The image processing system 100 shown in the figure similarly includes cameras 10 a and 10 b , an operation device 11 , and a display device 30 , but an image processing device 20A is used instead of the image processing device 20 included in the image processing system 100 .

[0072] The image processing device 20A and Figure 1 The image processing device 20 shown in the figure similarly includes the cutting units 21 a and 21 b and the data change control unit 24 , and uses a memory 22A and a synthesis processing unit 23A instead of the memory 22 and the synthesis processing unit 23 .

[0073] The memory 22A is a nonvolatile semiconductor memory such as a flash memory, and stores transmission control data used when the video signal VTa and the video signal VTb are transmission-combined.

[0074] In addition, the transmission control data OSD is the following data: each dot data piece of the area within the screen of the display device 30 that displays the image GA based on the image signal VTa is set to image data representing a specified color, and each dot data piece of the area that displays the image GB based on the image signal VTb is set to image data represented by a color other than the above-mentioned specified color.

[0075] Fig.11A It is a diagram showing an example of the format of the transmission control data OSD.

[0076] exist Fig.11A In the example shown, 8 bits (HEX) are used to represent each point data piece. Fig.11A In the transmission control data OSD shown, each dot data piece of the area of ​​the display image GA within the screen of the display device 30 (1st row to Yth row × 1st column to Wth column) is set to "00h" representing black, and each dot data piece of the area (specified area) of the display image GB is set to "FFh" representing white.

[0077] The memory 22A reads the transmission control data in response to power being turned on, and supplies the transmission control data to the synthesis processing unit 23A as transmission control data OSD.

[0078] The synthesis processing section 23A includes a transmission area adding section 231 , a selector 232 , and a designated color transmission control section 233 .

[0079] The transmission area adding section 231 receives the image signal VTb supplied from the cutting section 21b together with the transmission control data OSD. The transmission area adding section 231 replaces each dot data piece included in the area "FFh" representing white in the transmission control data OSD with the image signal VTb representing the image GB, thereby generating a Fig. 11B As shown in FIG. 1 , a video signal VTd is obtained by adding a “00h” area representing black as a transmission area to the video signal VTb representing the video GB. Then, the transmission area adding unit 231 supplies the generated video signal VTd to the selector 232 and the designated color transmission control unit 233.

[0080] The designated color transmission control unit 233 receives the sequence of each dot data piece in the image signal VTd in sequence. Furthermore, the designated color transmission control unit 233 generates a selection signal SC and supplies the selection signal SC to the selector 232. The selection signal SC is used to select the selected color. Fig. 11B As shown in FIG. 2 , when the dot data piece corresponds to “00h” indicating the designated color (black), the image signal VTa is selected. On the other hand, when the dot data piece corresponds to “FFh” indicating white, the image signal VTd is selected. That is, the designated color transmission control unit 233 receives the image signal VTd to which the transmission area is added, and selects the image signal VTa in the interval indicating the designated color in the image signal VTd. On the other hand, in the interval indicating a color other than the designated color (white) in the image signal VTd, the designated color transmission control unit 233 generates a selection signal SC for selecting the image signal VTd.

[0081] The selector 232 selects the image signal VTd representing the image GB when each dot data piece in the image signal VTd does not represent black, and selects the image signal VTa representing the image GA when each dot data piece in the image signal VTd represents black, based on the selection signal SC. Then, the selector 232 supplies the selected one of the image signals VTa and VTd to the display device 30 as the composite image signal VMX.

[0082] That is, through the above-mentioned selection operation, the selector 232 selects the image GB represented by the image signal VTd and the image GA represented by the image signal VTa. Fig. 11C The synthesis is connected as shown.

[0083] At this time, similarly to the image processing system 100, in the image processing system 100A, the user can also change the transmission control data OSD by using the operating device 11. Figure 8 , Fig. 9A or Fig. 9B As shown in the above, the size of the image GB in the designated area displayed on the screen of the display device 30 and the shape of the boundary between the images GA and GB are changed to the forms desired by the user.

[0084] [Example 3]

[0085] Fig.12 This is a diagram showing an example of the structure of a substrate module that implements the image processing device 20 (20A).

[0086] like Fig.12 As shown, the image processing device 20 (20A) is composed of a substrate module in which an MCU (Micro Controller Unit) 201, a flash memory 202 as a memory 22 (22A), and a synthesis processing IC chip 203 as a synthesis processing unit 23 (23A) are mounted on a substrate 200.

[0087] The MCU 201 has a built-in nonvolatile memory, which stores a program for controlling writing or reading from the flash memory 202 and realizing the operations of the cutting units 21 a and 21 b and the data change control unit 24 .

[0088] The MCU 201 executes the above-mentioned program to perform the following operations on the image signals Va and Vb supplied from the cameras 10a and 10b, respectively. Figure 3B and Figure 3C The obtained image signals VTa and VTb are supplied to the synthesis processing IC chip 203 by the cutting process as shown. Then, the MCU 201 performs read access to the flash memory 202 to read the transmission control data (TD, OSD) stored in the flash memory 202. In addition, at the time of shipment, the flash memory 202 stores, for example, Figure 4 Transmission control data shown.

[0089] However, when receiving rewrite transmission control data and a data change command wirelessly transmitted from the operating device 11, the MCU 201 updates the transmission control data by performing write access to the flash memory 202 to overwrite the contents of the transmission control data stored in the flash memory 202 with the received rewrite transmission control data.

[0090] The flash memory 202 reads the transmission control data stored in the flash memory 202 according to the read access from the MCU 201 , and supplies the transmission control data to the synthesis processing IC chip 203 as transmission control data TD (OSD).

[0091] The synthesis processing IC chip 203 includes a circuit responsible for the operation of the synthesis processing unit 23 ( 23A) and supplies a synthesized video signal VMX obtained by synthesizing the video signals VTa and VTb based on the transmission control data TD (OSD) to the display device 30 .

[0092] Fig.13 This is a diagram showing another example of the structure of a substrate module that implements the image processing device 20 (20A).

[0093] exist Fig.13 In the base module shown, Fig.12 In the illustrated substrate module, an MCU 201 and a synthesis processing IC chip 203 are mounted on a substrate 200 , but a flash memory 202 is not mounted. Instead, a connector 204 for detachably connecting the flash memory is mounted.

[0094] That is, through Fig.13 When the illustrated substrate module realizes the image processing device 20 (20A), a flash memory 202A storing the above-mentioned transmission control data (TD, OSD) is prepared as an external memory, and the flash memory 202A is connected to the connector 204. When receiving a read access from the MCU 201 via the connector 204, the flash memory 202A reads the transmission control data stored in itself, and supplies the transmission control data as the transmission control data TD (OSD) to the synthesis processing IC chip 203 via the connector 204.

[0095] In addition, Fig.13 In the base module shown, Fig.12 Similarly to the illustrated substrate module, upon receiving the rewriting transmission control data and the data change command wirelessly transmitted from the operating device 11, the MCU 201 overwrites the contents of the transmission control data stored in the flash memory 202A with the rewriting transmission control data.

[0096] Fig.14 It is shown Fig.13 FIG. 2 is a diagram showing a modified example of the substrate module shown.

[0097] exist Fig.14 In the base module shown, Fig.13 The substrate module shown in the figure is also provided with a connector 204 to which a flash memory 202A serving as an external memory is detachably connected. Fig.14In the substrate module shown, when the flash memory 202A is connected to the connector 204, the transmission control data stored in the flash memory 202A is written and stored in the non-volatile memory built into the MCU 201. At this time, the MCU 201 supplies the transmission control data stored in the non-volatile memory built into the MCU 201 together with the image signals VTa and VTb extracted from the photographic image signals Va and Vb as described above to the synthesis processing IC chip 203 as transmission control data TD (OSD).

[0098] In addition, Figure 1 , Fig.10 , Figure 12 to Figure 14 In the illustrated configuration, two video signals captured by two cameras (10a, 10b) are synthesized and displayed, but the video signals to be synthesized do not necessarily need to be captured by the cameras.

[0099] In short, the image processing device involved in the present invention only needs to include at least the following synthesis processing unit and memory.

[0100] That is, the synthesis processing unit (23, 23A) generates a synthesized image signal (VMX) obtained by synthesizing the first image and the second image in a manner that allows the first image included in a designated area in the screen to be transmitted, in order to arrange the first image (GA) based on the first image signal (Va, VTa) in the screen and arrange the second image (GB) based on the second image signal (Vb, VTb) different from the first image signal in the screen. The memory (22, 22A, 202, 202A) stores transmission control data (TD, OSD) that specifies the designated area and shows the transmission method (transmittance) of the first image in the designated area.

[0101] According to the above configuration, by changing the content of the transmission control data stored in the memory, the size of the second image (GB) displayed in a designated area within a screen displaying the first image (GA) and the shape of the boundary between the first and second images can be changed to a size and shape as requested by the user.

[0102] Description of Reference Numerals

[0103] 10a, 10b: cameras; 20, 20A: image processing devices; 22, 22A: memories; 23, 23A: synthesis processing units; 24: data change control units; 30: display devices.

Claims

1. An image processing device, characterized in that: include: a synthesis processing unit for arranging a first image based on a first image signal in a screen and arranging a second image based on a second image signal different from the first image signal in the screen, generating a synthesized image signal obtained by synthesizing the first image and the second image in such a manner that the first image included in a designated area in the screen is transmitted; as well as A memory stores transmission control data that specifies the designated area and shows a transmission mode of the first image in the designated area.

2. The image processing device according to claim 1, characterized in that: The synthesis processing unit arranges the second image so as to overlap with at least a portion of the first image, and the designated area in the screen is located in an area where the first image and the second image overlap.

3. The image processing device according to claim 2, characterized in that: The data change control unit includes a data change control unit that, upon receiving the transmission control data for rewriting and a data change command, overwrites the transmission control data stored in the memory with the transmission control data for rewriting.

4. The image processing device according to any one of claims 1 to 3, characterized in that: The transmission control data is composed of a plurality of point data pieces corresponding to each point in the picture. The point data pieces corresponding to the points belonging to the designated area each represent a transmittance of 100%, and the point data pieces corresponding to the points belonging to an area other than the designated area each represent a transmittance of 0%.

5. The image processing device according to any one of claims 1 to 3, characterized in that: The transmission control data is composed of a plurality of point data pieces corresponding to each point in the picture. The point data slices corresponding to each point at the boundary between the designated area in the screen and the area other than the designated area respectively show a transmittance of 50%, the point data slices corresponding to each point among the points belonging to the designated area except the points belonging to the boundary respectively show a transmittance of 100%, and the point data slices corresponding to each point belonging to the area other than the designated area respectively show a transmittance of 0%.

6. The image processing device according to any one of claims 1 to 3, characterized in that: The transmission control data is composed of a plurality of point data pieces corresponding to each point in the picture. The point data pieces corresponding to each point belonging to the designated area are image data representing a predetermined designated color, and the point data pieces corresponding to each point belonging to an area other than the designated area are image data representing a color other than the designated color. The synthesis processing unit comprises: a transmission area adding unit for replacing the dot data piece belonging to the area representing the designated color in the transmission control data with the second image signal, thereby generating a transmission area added image signal obtained by adding an area representing a color other than the designated color to the second image signal as a transmission area; a designated color transmission control unit that receives the transmission area additional image signal and generates a selection signal for selecting the first image signal in a section of the transmission area additional image signal indicating the designated color and selecting the transmission area additional image signal in a section of the transmission area additional image signal indicating a color other than the designated color; and A selector selects one of the first image signal and the transmission area additional image signal according to the selection signal, and outputs the selected one as the composite image signal.

7. The image processing device according to any one of claims 1 to 3, characterized in that: The memory is a nonvolatile memory capable of rewriting the transmission control data.

8. The image processing device according to claim 7, characterized in that: The device includes a substrate provided with a connector for detachably connecting the synthesis processing unit and the memory.

9. An image processing system, characterized in that: include: a first camera that outputs a first image signal representing a captured image; a second camera that outputs a second image signal representing a captured image; A display device having a single screen; a synthesis processing unit for generating a synthesized image signal obtained by synthesizing the first image and the second image in such a manner that the first image included in a designated area in the screen is transmitted, in order to arrange a first image based on the first image signal in a screen and arrange a second image based on a second image signal different from the first image signal in the screen; a memory storing transmission control data that defines the designated area and shows a transmission mode of the first image in the designated area; and The data change control unit overwrites the transmission control data stored in the memory with the transmission control data for rewriting when receiving the transmission control data for rewriting and the data change command.

Images