Image processing device, image processing method, POI information creation system, warning system, and guidance system
First Claim
1. An image processing device comprising:
- a processor configured to execute various programs for performing image processing on a target image; and
a memory that stores a result of the image processing, whereinthe processor is configured to executea process of converting a color space of the target image and acquiring color information on the converted color space,a process of calculating, for the target image, a first average value indicating an average value of brightness of color information on a target region that contains an object to be detected,a process of comparing, for the target region, brightness of color information on each pixel with the first average value to generate a corrected image with corrected brightness/darkness, anda process of extracting the object on the basis of the corrected image,wherein the processor is configured to, for a past image that has been captured prior to the target image, calculate a second average value indicating an average value of brightness of color information on a region corresponding to the target region of the target image, and generate the corrected image by taking into consideration a ratio between the first average value and the second average value.
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Abstract
Even when the brightness of an image in a video changes, detection of an object in the background is realized by accurately separating the object in the background from the background of the image. An image processing device in accordance with the present invention executes a process of converting a color space of a processing target image and acquiring color information on the converted color space, a process of calculating, for the target image, an average value of the brightness of color information on a target region that contains an object to be detected, and a process of comparing, for the target region, the brightness of color information on each pixel with the calculated average value, a process of generating a corrected image with corrected brightness/darkness, and a process of extracting the object on the basis of the corrected image (See FIG. 1).
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Citations
13 Claims
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1. An image processing device comprising:
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a processor configured to execute various programs for performing image processing on a target image; and a memory that stores a result of the image processing, wherein the processor is configured to execute a process of converting a color space of the target image and acquiring color information on the converted color space, a process of calculating, for the target image, a first average value indicating an average value of brightness of color information on a target region that contains an object to be detected, a process of comparing, for the target region, brightness of color information on each pixel with the first average value to generate a corrected image with corrected brightness/darkness, and a process of extracting the object on the basis of the corrected image, wherein the processor is configured to, for a past image that has been captured prior to the target image, calculate a second average value indicating an average value of brightness of color information on a region corresponding to the target region of the target image, and generate the corrected image by taking into consideration a ratio between the first average value and the second average value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image processing method for identifying a desired object in a target image, the method comprising the following steps executed by a processor, the processor being configured to execute various programs for performing image processing on the target image:
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converting a color space of the target image and acquiring color information on the converted color space; calculating, for the target image, a first average value indicating an average value of brightness of color information on a target region that contains an object to be detected; comparing, for the target region, brightness of color information on each pixel with the first average value to generate a corrected image with corrected brightness/darkness; extracting the object by separating the object from a background of the corrected image, and comparing a reference image prepared in advance with the extracted object, thereby identifying the object; and calculating, for a past image that has been captured prior to the target image, a second average value indicating an average value of brightness of color information on a region corresponding to the target region of the target image, and generating the corrected image by taking into consideration a ratio between the first average value and the second average value. - View Dependent Claims (11, 12, 13)
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Specification