Video image processing device and video image processing method
An image processing and image technology, applied in image data processing, image communication, television, etc., can solve the problems of difficulty in accurately tracing out, unable to fully shield the protected object, etc., to improve the degree of freedom and suppress the increase of the structure of the device Effect
Active Publication Date: 2013-03-20
JVC KENWOOD CORP
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[0004] However, in the above-mentioned method of dividing a photographed image into blocks and setting a masked area, the shape of the masked area is limited to a shape obtained by combining rectangles.
Therefore, it is difficult to accurately trace the image of the object to be protected, and sometimes the object to be protected cannot be sufficiently covered
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[0029] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0030] figure 1 It is a block diagram showing the configuration of the video processing device according to the embodiment of the present invention. like figure 1 As shown, the video processing device 1 of this embodiment includes a video acquisition unit 2 , an operation input unit 3 , a mask information generation unit 4 , a mask unit 5 , and a monitor 6 .
[0031] The video acquisition unit 2 has an imaging function, and outputs a video signal composed of a luminance signal and color difference information obtained by photographing a subject, and a synchronization signal thereof. The synchronization signal includes a horizontal synchronization signal, a vertical synchronization signal and a clock signal. In addition, the video acquisition unit 2 may also acquire the video signal captured by the imaging device and its synchronous signal from the outside.
[0032] ...
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A mask information generator (4) carries out the following processing: (1) defining lines which become respective sides of a polygon of which three or more points on a display screen designated by user's operation become vertices; (2) calculating a value of a coordinate in a vertical direction on each of the lines which has a value of a coordinate in a horizontal direction of each pixel designated by a counter which designates a coordinate of each pixel in an image signal based on a synchronization signal thereof; and (3) comparing a value of the coordinate designated by the counter in the vertical direction of each pixel with the calculated value of the coordinate on each of the lines, to determine whether or not each pixel in the image signal is included in a mask region which is a region within the polygon surrounded by the lines. A masking unit (5) carries out masking using a mask image with respect to each pixel included in the mask region.
Description
technical field [0001] The present invention relates to an image processing device and an image processing method for masking a part of an image. Background technique [0002] When monitoring a public place using a surveillance camera, it is necessary to consider not disclosing an individual's house or the like in order to protect privacy. Therefore, masking processing is performed on a part of the image captured by the surveillance camera. [0003] For example, a technique is known in which a photographed image is divided into blocks, a masking area is set by designating whether to perform masking in units of blocks, and masking processing is performed on the image in the masking area. [0004] However, in the above method of dividing a captured image into blocks and setting a masked area, the shape of the masked area is limited to a shape obtained by combining rectangles. Therefore, it is difficult to accurately trace the image of the object to be protected, and the obje...
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IPC IPC(8): H04N5/225H04N5/232H04N5/262H04N7/18
CPCG06T11/40G06T17/20H04N7/18
Inventor 佐藤博幸
Owner JVC KENWOOD CORP