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公开(公告)号：US20220318543A1
公开(公告)日：2022-10-06
申请号：US17523930
申请日：2021-11-11
Applicant: Realtek Semiconductor Corp.
Inventor： Chien-Hao Chen , Chao-Hsun Yang , Shih-Tse Chen
Abstract: The present invention provides a processing circuit applied to a face recognition system, which includes a characteristic value calculation module, a determination circuit and a threshold value calculation module. The characteristic value calculation module is used to receive an image and process the image to generate a specific characteristic value; when the face recognition system operates in a face recognition phase, the determination circuit calculates multiple differences each between the specific characteristic value and one of multiple reference characteristic values, and determines whether at least one of the multiple differences is lower than a threshold value to generate a determination result; and when the face recognition system operates in a face registration phase, the threshold value calculation module determines a new threshold value according to differences between the specific characteristic value and the multiple reference values, for updating the threshold value used by the determination circuit.
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公开(公告)号：US11200681B2
公开(公告)日：2021-12-14
申请号：US16744208
申请日：2020-01-16
Applicant: Realtek Semiconductor Corp.
Inventor： Shang-Lun Chan , Chao-Hsun Yang , Chun-Chang Wu , Shih-Tse Chen
Abstract: A motion detection method includes acquiring a raw image, detecting a motion object image according to the raw image by using a motion detector, cropping the raw image to generate a sub-image according to the motion object image, and inputting the sub-image to a processor for determining if a motion object of the sub-image matches with a detection category. The processor includes a neural network. The shape of the sub-image is a polygonal shape.
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33.发明申请公开(公告)号：US20210074002A1
公开(公告)日：2021-03-11
申请号：US16745258
申请日：2020-01-16
Applicant: Realtek Semiconductor Corp.
Inventor： Chao-Hsun Yang , Shang-Lun Chan , Chun-Chang Wu , Shih-Tse Chen
Abstract: A motion image integration method includes acquiring a raw image, detecting a first motion region image and a second motion region image by using a motion detector according to the raw image, merging the first motion region image with the second motion region image for generating a motion object image according to a relative position between the first motion region image and the second motion region image, and cropping the raw image to generate a sub-image corresponding to the motion object image according to the motion object image. A range of the motion object image is greater than or equal to a total range of the first motion region image and the second motion region image. Shapes of the first motion region image, the second motion region image, and the motion object image are polygonal shapes.
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公开(公告)号：US10146505B2
公开(公告)日：2018-12-04
申请号：US15442879
申请日：2017-02-27
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Tsung-Hsuan Li , Hao-Tien Chiang , Shih-Tse Chen
Abstract: Provided is a fast divider including an initial parameter setting unit and an arithmetic unit. The arithmetic unit is coupled to the initial parameter setting unit that receives a divisor and a dividend, and sets a plurality of initial parameters of a sequence according to the divisor and the dividend. The plurality of initial parameters includes an initial term, a first term and a common ratio having an absolute value smaller than 1. The arithmetic unit stores a recurrence relation of the sequence and iteratively computes a quotient using the recurrence relation according to the plurality of initial parameters. The recurrence relation indicates that a (k+1)th term is equal to a product of a kth term multiplied by a sum of the common ratio and 1 subtracted by a product of a (k−1)th term multiplied by the common ratio. k is an integer larger than or equal to 1.
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公开(公告)号：US09830690B2
公开(公告)日：2017-11-28
申请号：US15089700
申请日：2016-04-04
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Hao-Tien Chiang , Shih-Tse Chen
CPC classification number: G06T5/008 , G06T5/40 , G06T2207/20208 , H04N5/20 , H04N5/2355 , H04N9/68
Abstract: A method for wide dynamic range imaging is illustrated. A region mapping operation having steps as follows is applied to an image using a plurality of region mapping curves for compensating different luminance associated with a plurality of regions in the image. A low frequency image is obtained. A reference value for each region in the image is obtained according to the low frequency image. One region mapping curve is selected according to the reference value of the region. A gain curve is obtained according to the selected region mapping curve, a gain value of a pixel value or a luminance value of the region is obtained according to the gain curve, an adjusted gain value is obtained according to the luminance corresponding to the pixel value, and the pixel value is adjusted according to the luminance value, the gain value, and the adjusted gain value.
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Patent Agency Ranking
公开(公告)号：US20170301075A1
公开(公告)日：2017-10-19
申请号：US15476209
申请日：2017-03-31
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Hao-Tien Chiang , Tsung-Hsuan Li , Shih-Tse Chen
CPC classification number: G06T5/40 , G06T5/008 , G06T11/001 , G06T2207/10024 , G06T2207/20172
Abstract: An image contrast enhancement method and an apparatus thereof are disclosed, which calculate the degree of influencing the clarity according to the influence feature (e.g., heavy fog, dust, smoke, or etc.) in the image, and then adjust the brightness of the pixels corresponding to features of influencing the clarity according to the degree, thereby enhancing image contrast and removing phenomenon of influencing the clarity in the image.
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公开(公告)号：US20160086309A1
公开(公告)日：2016-03-24
申请号：US14859373
申请日：2015-09-21
Applicant: Realtek Semiconductor Corp.
Inventor： Chih-Yu Hsu , Wen-Tsung Huang , Shih-Tse Chen
CPC classification number: G06T3/4015 , G06T5/002 , H04N5/347 , H04N9/07
Abstract: An image signal processing method includes: receiving an original color filter array (CFA) image and a pixel binned CFA image; computing a specific information of the pixel binned CFA image; and processing the original CFA image according to the specific information. The associated image signal processor includes an input terminal, an operating unit and a processing unit, wherein the input terminal is for receiving an original CFA image and a pixel binned CFA image, the operating unit is for computing a specific information of the pixel binned CFA image, and the processing unit is for processing the original CFA image according to the specific information and utilizing the pixel binned CFA image.
Abstract translation: 一种图像信号处理方法包括：接收原始滤色器阵列（CFA）图像和像素合并CFA图像; 计算像素分组的CFA图像的特定信息; 并根据具体信息处理原始CFA图像。 相关联的图像信号处理器包括输入端子，操作单元和处理单元，其中输入端子用于接收原始CFA图像和像素分组的CFA图像，所述操作单元用于计算像素分组的CFA的特定信息 图像，并且处理单元用于根据特定信息处理原始CFA图像并利用像素分组的CFA图像。
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公开(公告)号：US20250078445A1
公开(公告)日：2025-03-06
申请号：US18669941
申请日：2024-05-21
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Chih-Yuan Koh , Chao-Hsun Yang , Shih-Tse Chen
Abstract: A judgment system, an electronic system, a judgment method, and a display method are provided. The judgment method includes: receiving an image by a feature acquisition module and obtaining a first key point coordinate, a second key point coordinate, and a size of a face box of a user by the feature acquisition module based on the image; and performing following steps by a judgment module: obtaining a judgment value based on an ordinate of the first key point coordinate, an ordinate of the second key point coordinate, and a size of the face box; and sending a rotation signal in response to that the judgment value satisfies a rotation condition.
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公开(公告)号：US12125306B2
公开(公告)日：2024-10-22
申请号：US17685383
申请日：2022-03-03
Applicant: Realtek Semiconductor Corp.
Inventor： Chien-Hao Chen , Chao-Hsun Yang , Chih-Wei Wu , Shih-Tse Chen
Abstract: A method of performing person re-identification includes: obtaining a person feature vector according to an extracted image containing a person; obtaining state information of the person according to a state of the person in the extracted image; comparing the person feature vector with a plurality of registered person feature vectors in a database; when the person feature vector successfully matches a first registered person feature vector of the plurality of registered person feature vectors, identifying the person as a first identity corresponding to the first registered person feature vector; and selectively utilizing the person feature vector to update one of the first registered person feature vector and at least one second registered person feature vector that correspond to the first identity according to the state information.
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公开(公告)号：US20230154223A1
公开(公告)日：2023-05-18
申请号：US17685383
申请日：2022-03-03
Applicant: Realtek Semiconductor Corp.
Inventor： Chien-Hao Chen , Chao-Hsun Yang , Chih-Wei Wu , Shih-Tse Chen
Abstract: A method of performing person re-identification includes: obtaining a person feature vector according to an extracted image containing a person; obtaining state information of the person according to a state of the person in the extracted image; comparing the person feature vector with a plurality of registered person feature vectors in a database; when the person feature vector successfully matches a first registered person feature vector of the plurality of registered person feature vectors, identifying the person as a first identity corresponding to the first registered person feature vector; and selectively utilizing the person feature vector to update one of the first registered person feature vector and at least one second registered person feature vector that correspond to the first identity according to the state information.
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