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公开(公告)号：US11468572B2
公开(公告)日：2022-10-11
申请号：US16480989
申请日：2018-01-31
摘要： An image processing device has a function for plotting a luminance gradient co-occurrence pair of an image on a feature plane and applying an EM algorithm to form a GMM. The device learns a pedestrian image and creates a GMM, subsequently learns a background image and creates a GMM, and calculates a difference between the two and generates a GMM for relearning based on the calculation. The device plots a sample that conforms to the GMM for relearning on the feature plane by applying an inverse function theorem. The device forms a GMM that represents the distribution of samples at a designated mixed number and thereby forms a standard GMM that serves as a standard for image recognition. When this mixed number is set to less than a mixed number designated earlier, the dimensions with which an image is analyzed are reduced, making it possible to reduce calculation costs.
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公开(公告)号：US11256950B2
公开(公告)日：2022-02-22
申请号：US16480960
申请日：2018-01-31
摘要： An image processing device converts an image that is a recognition object image to high-resolution, medium-resolution, and low-resolution images. The device sets the pixel of interest of the high-resolution image, and votes the co-occurrence in a gradient direction with offset pixels, the co-occurrence in the gradient direction pixels in the medium-resolution image, and the co-occurrence in the gradient direction pixels in the low-resolution image, to a co-occurrence matrix. The device creates such a co-occurrence matrix for each pixel combination and for each resolution. The device executes the process on each of the pixels of the high-resolution image, and creates a co-occurrence histogram wherein the elements of a plurality of co-occurrence matrices are arranged in a line. The device normalizes the co-occurrence histogram and extracts, as a feature quantity of the image, a vector quantity having as a component a frequency resulting from the normalization.
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公开(公告)号：US10902614B2
公开(公告)日：2021-01-26
申请号：US16088776
申请日：2017-03-30
摘要： An image recognition device sets an overall observation region which surrounds a whole body of an object and partial observation regions which surround characteristic parts of the object respectively to locations in an image which are estimated to include captured images of the object. The device clips images in the overall observation region and the partial observation regions, and calculates similarity degrees between them and previously learned images on the basis of a combination of two image feature amounts. The device calculates an optimum ratio in combining the HOG feature amount and the color distribution feature amount individually for the regions. This ratio is determined by setting a weight parameter αi for setting a weight used for combining the HOG feature amount and the color distribution feature amount to be included in a state vector and subjecting the result to complete search by a particle filter.
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公开(公告)号：US11017262B2
公开(公告)日：2021-05-25
申请号：US15771840
申请日：2017-03-30
发明人： Hideo Yamada , Kazuhiro Kuno , Hakaru Tamukoh , Shuichi Enokida , Shiryu Ooe
摘要： A hardware configuration is constructed for calculating at high speed the co-occurrence of luminance gradient directions between differing resolutions for a subject image. In an image processing device, a processing line for high-resolution images, a processing line for medium-resolution images, and a processing line for low-resolution images are arranged in parallel, and the luminance gradient directions are extracted for each pixel simultaneously in parallel from images having the three resolutions. Co-occurrence matrix preparation units prepare co-occurrence matrices by using the luminance gradient directions extracted from these images having the three resolutions, and a histogram preparation unit outputs a histogram as an MRCoHOG feature amount by using these matrices. To concurrently processing the images having the three resolutions, high-speed processing can be performed, and moving pictures output from a camera can be processed in real time.
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公开(公告)号：US11474542B2
公开(公告)日：2022-10-18
申请号：US16652100
申请日：2019-03-26
申请人： AISIN CORPORATION
发明人： Kazuhiro Kuno
摘要： According to a moving body, position and direction of a user are calculated from distance measurement data, and on the basis thereof, the position and direction of the moving body are calculated. If the moving body is located in the first or fourth quadrant of the user coordinate system, a right-side moving target is set as the moving target. If the moving body is in the second or the third quadrant of the user coordinate system, a left-side moving target is set as the moving target. Accordingly, the moving target is set on the basis of the position of the moving body with respect to the user, so the moving body is prevented from cutting across in front of the user while its travelling.
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