71results about How to "Reduce the amount of image data" patented technology

When a subject is imaged for the purpose of deciding the angle of view, the full image that is capable of being sensed by a CCD is displayed on an LCD. The user designates the position of a cropping area in the image being displayed. Only image data representing the image within the border of the designated area is recorded on a memory card. Since the amount of image data to be recorded on the memory card is thus reduced, image data representing images of a greater number of frames can be recorded on the memory card.

In transmitting image data from multiple cameras to an image processing section to produce a synthesized image from respective camera images, the amount of data transmitted through a transmission path can be cut down without sacrificing the quality of the synthesized image. In accordance with a correspondence between the synthesized and camera images as described on a mapping table, a resolution specifier specifies resolutions, which should be necessary for image synthesis, for respective areas of each camera image. A compressor, provided for each of the cameras, compresses the associated camera image data according to the resolutions specified. In this manner, the image data, which has been compressed in accordance with the correspondence between the synthesized and camera images, is transmitted through the transmission path.

The invention discloses an ultrahigh speed real-time three-dimensional measuring device and an ultrahigh speed real-time three-dimensional measuring method. The measuring device comprises a matrix camera, and one or more laser displacement sensors; and the measuring method comprises the following steps: obtaining a three-dimensional datum point and a spacial linear equation by the laser displacement sensors, the matrix camera and a planar pattern; and on the basis of the obtained datum point and spacial linear equation, according to measured displacement of a measured object, calculating coordinates of measured light spots of the measured object positioned at different positions in global coordinates so as to complete the ultrahigh speed real-time three-dimensional vision measurement on the measured object.

The invention relates to a method for automatically detecting a pre-defined image pattern in an original picture, wherein pixel data from said original picture are looked through by means of a processing step, including at least one transform, to find said pre-defined image pattern, wherein according to the invention said processing is split up into at least two stages, wherein a first stage with a coarse processing is to detect locations in the original picture imposing an increased likelihood that the pre-defined image pattern, can be found there, and wherein a second stage with a refined processing is applied to the locations to identify the pre-defined image pattern.

The invention discloses a laser-vision linked night invasion detection device, which realizes the detection and identification of invasion events by laser detection and active vision technology at night. The invention relates to invasion detection technology in security protection, in particular to optoelectronic and visual information processing technology-based invasion detection. The technical problems needing to be solved are to detect and identify the invasion events of pedestrians or vehicles in an environment with poor light at night, and prevent false alarms. In the device, a modulated laser beam is used as a detection light source and is matched with a photoelectric signal collector, a photoelectric signal amplifier and a photoelectric signal processor to form a front-end unit; and a camera provided with active illumination and an embedded image processor are used as a rear-end response processing unit. When the invasion events occur in a detection area, a laser photoelectric signal is interrupted to trigger an active vision system so as to realize linkage and improve the reliability of the invasion detection. The laser-vision linked night invasion detection device can be used for anti-invasion security detection around residential areas, storerooms, airports and other important places.

The invention rail fastener abnormity detecting system based on point light source array linear array imaging. The rail fastener abnormity detecting system comprises a point light source array, a linear array camera, a wheel encoder, an RFID detector and an industrial personal computer, wherein the point light source array projects an I-shaped circular light spot to a fastener to modulate the shape and height information of the fastener, the imaging area of the linear array camera penetrates the projection area of the I-shaped circular light spot, the shape modulation light strip image on the surface of the fastener is obtained through scanning, and a deep learning classification method is used to detect abnormities such as fastener elastic rod losing, fastener elastic rod loosening and fastener gasket losing. The rail fastener abnormity detecting system is low in cost, applicable to fastener abnormity detection under a high-speed traveling state and capable of effectively detecting various abnormities of different types of fasteners.

An imaging apparatus and an imaging method supply an optimum amount of image data to another apparatus. When a PDA has a maximum transfer rate of 1.5 Mbps, a mobile phone determines that the maximum speed of communication with the PDA is low, reduces the amount of moving image data captured by a CCD of the mobile phone accordingly, and supplies the captured moving image data to the PDA. The PDA therefore displays a low-quality moving image on its display unit. When the PDA has a maximum transfer rate of 480 Mbps, the CPU of the mobile phone leaves unchanged the amount of moving picture data captured by the CCD and supplies the captured moving image data to the PDA. The PDA then displays a high-quality moving image on its display unit. The foregoing may be advantageously applied to digital cameras.

An image pickup apparatus for outputting image data on an image for which image processing is executed to a computer, the image pickup apparatus including: a thermal image capturing camera for capturing a thermal image; a visible-light camera for capturing an image under a visible light; a temperature zone extracting portion for detecting and extracting a portion corresponding to a predetermined temperature zone given from an outside from the thermal image; a background image extracting portion for extracting an image of an immobile object in the image captured under the visible light by the visible-light camera as a background image; and a synthesizing / outputting portion for synthesizing the portion extracted by the temperature zone extracting portion, and the background image extracted by the background image extracting portion with each other, and outputting image data on a resulting synthetic image.

An image display system includes: an image data output device that multiplexes and outputs raster data and compressed moving picture data; and an image display device that is connected to the image data output device through a transmission line and displays an image on the basis of image data output from the image data output device. The image data output device includes: a raster data acquisition unit that acquires the raster data; a compressed moving picture data acquisition unit that acquires the compressed moving picture data; a moving picture display region data generating unit that generates moving picture display region data indicating a display region, of a moving picture based on the compressed moving picture data, within the raster data; a data multiplexer that multiplexes the raster data acquired by the raster data acquisition unit, the compressed moving picture data acquired by the compressed moving picture data acquisition unit, and the moving picture display region data generated by the moving picture display region data generating unit; and a data transmitting unit that transmits multiplexed data through the transmission line. The image display device includes: a data receiving unit that receives data, which is transmitted from the image data output device, through the transmission line; a data demultiplexer that separates the data received by the data receiving unit into individual data; a moving picture rasterizing unit that performs a rasterizing process for separated compressed moving picture data so as to generate moving picture raster data; a display raster data synthesizing unit that synthesizes the moving picture raster data generated by the moving picture rasterizlng unit and the raster data so as to generate display raster data; and an image forming unit that forms an image on the basis of the generated display raster data.

The invention provides an image processing method for positioning a touch screen, which comprises the following steps: firstly, an image shooting module is initialized; secondly, a plurality of image sensors in the image shooting module perform synchronous shooting, and an image processing module performs time-sharing read on image data of effective shooting areas of various image sensors; thirdly, two storage areas the memory spaces of which are both one frame, wherein the other memory space is used for reading out the image data when one memory space is used for writing in the image data, the two memory spaces are alternately transformed and write-in and read-out are simultaneously performed; and fourthly, communication between the image processing module and a host computer is performed, and a position coordinate of a final touch point is determined. The image processing method for positioning the touch screen has the advantages of low cost, high positioning precision and quick transmission speed.

This invention discloses an extracting method for vertical image parallax based on sub-pixel, including following steps: firstly supposing the grey of one parallax image of any two parallax images as 1Pi, the parallax of a certain pixel point of j is (N+delta) pixels, wherein N is the integer, the delta is the integer less than one, then the grey of the matching point in the other parallax image is between 2Pi+N, j and 2Pi+N+1, j, if the 2Pi+N, j and 2Pi+N+1, j, 1Pi, j and its grey of 1Pi-1, j and 1Pi+1, j are satisfied with the relationship: FORMULA, then the parallax of the pixel point 1Pi, j is (N+delta) pixels. The parallax error extracted by the extracting method for vertical image parallax based on sub-pixel of this invention is small, the reconstruction of the parallax is accurate and the 3D scene can be really reappeared on the free vertical display with multiple view points.

The invention discloses a character detection method and device, and the method comprises the steps of obtaining a to-be-detected image, and converting the to-be-detected image into a grayscale image;converting the grayscale image into a binary image through binarization; performing morphological transformation on the binary image; and obtaining a contour of a color area representing a characterpart in the binary image after morphological transformation, and determining an area corresponding to the contour in the to-be-detected image as a character detection area. By utilizing the method, the character detection speed can be increased, the character detection accuracy is improved, and the user experience is improved. The invention also discloses a corresponding apparatus and a computer readable storage medium.

A stereo matching method based on image intensity quantization is revealed. The method includes several steps. Firstly, provide computer an image pair of an object for image intensity quantization of the image pair to get a quantization result. Then according to the quantization result, a first extracted image pair is generated and used to get a first disparity map. A second extracted image pair is generated similarly to get a second disparity map. Next the two disparity maps are compared with each other to get an image error data. When an error contained in the image error data is smaller than or equal to an error threshold value, the computer outputs the second disparity map. Moreover, accuracy of disparity maps is improved by iteration processing. Therefore, the amount of information for processing is minimized and efficiency of data access / transmission is improved.

The invention discloses a sleeper positioning and counting method using linear array image binarized area projection, and belongs to the technical field of track inspection, comprising: taking imagesof the track surface by a linear array scanning imaging system, selecting the detection area containing only the sleepers in the track image, binarizing the detection area, removing the interference area with smaller area in the binarized image to obtain binarized area images, projecting the binarized area images, binarizing the line projection curves, extracting the coordinates of the left and right sides of the square waves of the binarized line projection curves to realize the positioning for the sleepers, and calculating the number of sleepers according to the number of square waves of thebinarized line projection curves. The sleeper counting method provided by the invention has good anti-interference ability and robustness, may be used for mileage calculation based on sleeper counting, and provides mileage positioning information for the track inspection system.

A display control apparatus includes an image creating section creating a first image having a predetermined number of drawing areas each onto which a thumbnail image is drawn, and an erasing section erasing at least one drawing area from the first image in response to an instruction from a user to display the first image. The number of drawing areas erased is the same as a number that is determined by subtracting the number of thumbnail images to be drawn in the first image from the predetermined number of drawing areas of the first image. The apparatus also includes a drawing section drawing a thumbnail image in each of the unerased drawing areas remaining in the first image, and a display controlling section controlling display of the first image including the thumbnail image drawn in each drawing area.

An image data buffer apparatus includes a memory, and a FIFO control unit configured to cause the memory to operate as a FIFO and having a write pointer indicative of a write position of the memory and a read pointer indicative of a read position of the memory, wherein the FIFO control unit is configured to store image data as a plurality of blocks in the memory at respective positions successively indicated by the write pointer as the image data are supplied as the blocks contained in an image, to read one of the blocks from the memory at a position indicated by the read pointer, to read, from the memory, partial data that is part of at least one block adjacent to the one of the blocks, and to consolidate the one of the blocks and the partial data for transmission as one consolidated block.

An image display system includes: an image data output device that multiplexes and outputs raster data and compressed moving picture data; and an image display device that is connected to the image data output device through a transmission line and displays an image on the basis of image data output from the image data output device. The image display system is capable of displaying a high-quality moving picture on the image display device by reducing the amount of image data flowing through the transmission line without imposing excessive load on the image data output device, the image display device, the image data output device, an image processing program, and a computer-readable recording medium having the image processing program recorded therein.

The invention is suitable for the technical field of software, and provides a method and device for determining a shielded area of a virtual object, and terminal equipment, and the method comprises the steps of constructing a scene three-dimensional map of a current frame according to the feature points of the current frame and corresponding depth information; if a click operation sent by a user on the scene three-dimensional map is detected, displaying a specified virtual object at a position corresponding to the click operation; constructing a three-dimensional scene model according to the feature point information of the current frame; comparing the depth values of the three-dimensional scene model and the virtual object model; determining a shielded area of the virtual object in the current frame according to a comparison result; and determining the shielded area of the virtual object in the next frame according to the shielded area of the virtual object in the current frame. Through the method, the operation speed of identifying the virtual object in the shielded area of the sequence frame can be greatly improved.

The invention relates to the technical field of data processing. The invention discloses an image data retrieval method and device, electronic equipment and a computer readable storage medium, the image data retrieval method comprises the following steps: receiving an image data search request, the search request comprising search conditions with multiple attribute types, and each piece of image data comprising multiple attribute types of data information corresponding to an image; then determining at least one target attribute type from a plurality of attribute types in the search condition;and then based on the at least one target attribute type, searching in at least one attribute database corresponding to the at least one target attribute type, and determining image data meeting a searching condition. According to the method provided by the embodiment of the invention, the searching range of the image data can be reduced, the image data size involved in the image data searching process is reduced, the complexity in the image data searching process is reduced, and the searching efficiency of the image data is greatly improved.

A face detection method and a device are provided. The method includes the following steps: acquiring a video stream to be detected; identifying a corresponding dynamic change area from the video stream; and determining face information in the video stream based on the dynamic change area identified. The scheme can improve the speed and accuracy of face detection.

A terminal device and a display method are provided. The terminal device includes a proximity sensor, a memory, a controller and a display screen. The proximity sensor is configured to sense a distance from a human eye to the display screen. The memory is configured to store contents to be displayed. The controller is configured to determine a target resolution for the contents to be displayed based on the distance sensed by the proximity sensor, adjust an original resolution of the contents to be displayed to the target resolution to generate target display contents having the target display resolution, and control the display screen to display the target display contents in full screen. The target resolution may be inversely proportional to the distance. Solutions provided conform to the viewing characteristics of the human eye, and so can improve the user experience, and reduce the power consumption of the display screen.

The invention discloses a linear array image sleeper positioning and counting method based on multi-region gray projection and belongs to the field of rail detection. The method comprises the steps that a linear array imaging system is utilized to perform linear array scanning imaging on a rail pavement along the advancing direction of a train or a detection platform, and a linear array image containing sleepers is acquired; multiple detection regions are set in a sleeper region of the linear array image, image gray value horizontal projection is performed in each detection region to obtain multiple horizontal projection curves; the horizontal projection curves are fused after being subjected to filtering and smoothing to obtain united projection curves; and then sleeper counting is performed according to the quantity of square waves in the united projection curves or the quantity of crests or troughs in first-order derivatives of the united projection curves. According to the method,after sleeper positioning and counting, high-precision mileage counting can be realized, precise position information is provided for a rail inspection system, and convenience is brought to accurate positioning of a rail inspection result and quick finding in later maintenance.

A stereo matching method based on image intensity quantization is revealed. The method includes several steps. Firstly, provide computer an image pair of an object for image intensity quantization of the image pair to get a quantization result. Then according to the quantization result, a first extracted image pair is generated and used to get a first disparity map. A second extracted image pair is generated similarly to get a second disparity map. Next the two disparity maps are compared with each other to get an image error data. When an error contained in the image error data is smaller than or equal to an error threshold value, the computer outputs the second disparity map. Moreover, accuracy of disparity maps is improved by iteration processing. Therefore, the amount of information for processing is minimized and efficiency of data access / transmission is improved.

A remote monitoring device comprising an illuminating device, an image capturing device, a sensing device, and a loudspeaker is provided. When the sensing device senses a change in the surrounding environment, the illuminating device lights up, the image capturing device generates image signals, and the loudspeaker activates.

The invention discloses a linear array scanning image sleeper positioning and counting method based on gradient projection and belongs to the field of rail detection. The method comprises a step of performing linear array scanning imaging on a track pavement along the forward direction of a train or a detection platform by using a linear array imaging system to obtain a line array image includingsleepers, a step of performing gradient filtering perpendicular to a sleeper direction on the line array image to obtain a gradient filtering image, a step of setting a detection area in a sleeper area of the gradient filtering image, carrying out gradient projection in a direction parallel to the direction of the sleepers in the detection area to obtain a gradient projection curve, and a step ofdetecting the positions and numbers of peaks or troughs in the gradient projection curve, taking paired peaks and troughs for sleeper positioning, and calculating the sum of the numbers of peaks or troughs in the line array image to be the number of sleepers in a track. According to the method, after positioning and counting the sleepers, the high-precision mileage counting can be achieved, accurate position information is provided for a track inspection system, the accurate positioning of a track inspection result and quick search in later maintenance are facilitated.

The invention discloses a mobile phone terminal VR scene interactive display method based on cloud rendering. VR scenes can be watched on a mobile phone in combination with VR mobile phone glasses. According to the method, a sensor of a mobile phone is used for measuring the rotation angle of the head of a viewer, and a measurement result is transmitted to a rendering cloud so as to adjust the forward observation direction and the upward direction of a left eye virtual camera and a right eye virtual camera, so that a VR scene is interactively viewed on the mobile phone. According to the method, a binocular inhibition theory principle is utilized, different image resolutions are used when left and right eye pictures are drawn, and the three-dimensional picture drawing time and the image network transmission data volume can be reduced. By using the method, the VR scene can be watched only through a mobile phone browser without installing other plug-ins or a single mobile phone APP.

A reading time setting section (44) determines a read area for an imaging section (25) on the basis of color chart positional data (id). The imaging section (25) reads an image on printing paper during the reading time and readout image data (rd) is stored in an image data storage section (45). A reference mark detecting section (46) detects the positions of reference marks from the readout image data (rd). A color chart actual position calculation section (47) corrects a tilt of a color chart determined from the positions of the reference marks and calculates an actual position of each of color chart fields (cr). An image data readout section (48) reads out image data on a color chart field corresponding to the calculated actual position. At the same time, image data on a white color field immediately above the color chart field is also read out. A white color correction section (49) produces a white reference on the basis of the image data on the white color field and corrects the image data on the color chart field. A color chart information determination section (50) measures color chart information, such as a color density and a dot percentage, about each of the color chart fields. This printing press determines a reading time on the basis of the position of the color chart at the time of printing plate recording and thereby allows imaging of an area including the color chart on the printing paper being transported.