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1. 发明申请

US20230070321A1 FACE RECOGNITION NETWORK MODEL WITH FACE ALIGNMENT BASED ON KNOWLEDGE DISTILLATION 有权
公开(公告)号：US20230070321A1
公开(公告)日：2023-03-09
申请号：US17567147
申请日：2022-01-02
申请人： Realtek Semiconductor Corp.
发明人： Chien-Hao Chen , Shih-Tse Chen
IPC分类号： G06V10/774 , G06V10/24 , G06V40/16 , G06V10/778
摘要： A method for training a deep learning network for face recognition includes: utilizing a face landmark detector to perform face alignment processing on at least one captured image, thereby outputting at least one aligned image; inputting the at least one aligned image to a teacher model to obtain a first output vector; inputting the at least one captured image a student model corresponding to the teacher module to obtain a second output vector; and adjusting parameter settings of the student model according to the first output vector and the second output vector.

2. 发明授权

US11270442B2 Motion image integration method and motion image integration system capable of merging motion object images 有权
公开(公告)号：US11270442B2
公开(公告)日：2022-03-08
申请号：US16745258
申请日：2020-01-16
申请人： Realtek Semiconductor Corp.
发明人： Chao-Hsun Yang , Shang-Lun Chan , Chun-Chang Wu , Shih-Tse Chen
IPC分类号： G06T7/215 , G06T7/246
摘要： 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.

3. 发明授权

US10223778B2 Image contrast enhancement method and apparatus thereof 有权
公开(公告)号：US10223778B2
公开(公告)日：2019-03-05
申请号：US15476209
申请日：2017-03-31
申请人： REALTEK SEMICONDUCTOR CORP.
发明人： Hao-Tien Chiang , Tsung-Hsuan Li , Shih-Tse Chen
IPC分类号： G06T5/40 , G06T11/00
摘要： 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.

4. 发明授权

US09800793B2 Method for generating target gain value of wide dynamic range operation 有权
公开(公告)号：US09800793B2
公开(公告)日：2017-10-24
申请号：US15296324
申请日：2016-10-18
申请人： Realtek Semiconductor Corp.
发明人： Wei-Te Chang , Shih-Tse Chen
IPC分类号： H04N5/235 , G06T7/40 , G06K9/46 , G06K9/62
CPC分类号： H04N5/2352 , G06K9/4661 , G06K9/6215 , G06T7/408 , G06T7/90
摘要： A method for generating a target gain value of a wide dynamic range (WDR) operation is disclosed including: acquiring an average bright portion luminance corresponding to an average pixel luminance of a bright portion of a video image; acquiring an average dark portion luminance corresponding to an average pixel luminance of a dark portion of the video image; generating an initial gain value of the WDR operation according to a difference between the average bright portion luminance and the average dark portion luminance; and adjusting the initial gain value according to at least one of a color temperature and an exposure duration configuration value of the video image to generate the target gain value.

5. 发明授权

US09779476B2 Image signal processing method and image signal processor for noise reduction 有权
公开(公告)号：US09779476B2
公开(公告)日：2017-10-03
申请号：US14859373
申请日：2015-09-21
申请人： Realtek Semiconductor Corp.
发明人： Chih-Yu Hsu , Wen-Tsung Huang , Shih-Tse Chen
IPC分类号： G06T5/00 , H04N5/347 , G06T3/40 , H04N9/07
CPC分类号： G06T3/4015 , G06T5/002 , H04N5/347 , H04N9/07
摘要： 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.

6. 发明授权

US09269130B2 Image correction method using approximately non-linear regression approach and related image correction circuit 有权
标题翻译：使用近似非线性回归方法和相关图像校正电路的图像校正方法
公开(公告)号：US09269130B2
公开(公告)日：2016-02-23
申请号：US13858101
申请日：2013-04-08
申请人： Realtek Semiconductor Corp.
发明人： Shih-Tse Chen , Hao-Tien Chiang
IPC分类号： G06T5/00
CPC分类号： G06T5/006
摘要： An image correction method arranged for processing an original image to obtain a corrected image includes steps: receiving the original image from an image sensor; regarding each pixel of the original image, calculating a horizontal distance and a vertical distance between the pixel and a reference point in the original image; determining a horizontal ratio parameter and a vertical ratio parameter according to the horizontal distance and the vertical distance between the pixel and the reference point in the original image; and performing an approximately non-linear regression calculation on the horizontal ratio parameter, the vertical ratio parameter and a coordinate of the pixel to obtain a position of the pixel in the corrected image.
摘要翻译：一种布置用于处理原始图像以获得校正图像的图像校正方法，包括以下步骤：从图像传感器接收原始图像; 关于原始图像的每个像素，计算原始图像中的像素和参考点之间的水平距离和垂直距离; 根据原始图像中的像素与参考点之间的水平距离和垂直距离确定水平比参数和垂直比率参数; 并且对水平比参数，垂直比参数和像素的坐标执行近似非线性回归计算，以获得校正图像中的像素的位置。

7. 发明授权

US11157769B2 Image processing circuit and associated image processing method 有权
公开(公告)号：US11157769B2
公开(公告)日：2021-10-26
申请号：US16407200
申请日：2019-05-09
申请人： Realtek Semiconductor Corp.
发明人： Chun-Chang Wu , Shih-Tse Chen
IPC分类号： G06K9/62
摘要： An image processing circuit includes a receiving circuit, a feature fetching module and a decision circuit. In the operations of the image processing circuit, the receiving circuit is configured to receive image data. The feature fetching module is configured to use a multi-topological-convolutional network to fetch the features of the image data, to generate a plurality of image features determined by the characteristics and weights of the convolution filter, where the image features may be smooth features or edge features. In the present invention, the convolution filters used by the feature fetching module are not limited by a square convention filter, and the convolution filters may include the multiple topological convolutional network having non-square convolution filters. By using the multiple topological convolutional network of the present invention, the feature fetching module can fetch the rich image features for identifying the contents of the image data.

8. 发明授权

US10964029B2 Method of updating background model and related device 有权
公开(公告)号：US10964029B2
公开(公告)日：2021-03-30
申请号：US16653989
申请日：2019-10-15
申请人： Realtek Semiconductor Corp.
发明人： Shang-Lun Chan , Tsung-Hsuan Li , Chao-Hsun Yang , Shih-Tse Chen
IPC分类号： G06T7/215 , G06T7/90 , G06T7/136 , G06T7/11
摘要： A method of updating background model for an image processing device is disclosed. The method includes receiving at least a background image, counting a number of occurrences of a color of each pixel of the background image according to a color information of each pixel of the at least a background image, to establish a background model including a statistical color information about the color and the number of occurrences of the color, receiving a current image, and determining whether to update the number of occurrences of the color in the background model corresponding to a color of each pixel of the current image according to a color information of each pixel of the current image and a result of comparing a random number with a threshold.

9. 发明授权

US10055820B2 Image de-noising method and apparatus thereof 有权
公开(公告)号：US10055820B2
公开(公告)日：2018-08-21
申请号：US15439357
申请日：2017-02-22
申请人： REALTEK SEMICONDUCTOR CORP.
发明人： Tsung-Hsuan Li , Hao-Tien Chiang , Shih-Tse Chen
IPC分类号： G06K9/40 , G06T5/00 , G06K9/46 , G06K9/62 , G06T5/50
CPC分类号： G06T5/002 , G06K9/4661 , G06K9/6276 , G06T5/50 , G06T2207/10016 , G06T2207/20182 , G06T2207/20216 , G06T2207/20224
摘要： An image de-noising method and an apparatus thereof are disclosed, which includes categorizing a pixel in a current frame into a first low-frequency pixel having a first weight and a first high-frequency pixel having a second weight; categorizing a previous pixel corresponding to the position of the pixel in a previous frame into a second low-frequency pixel having a third weight and a second high-frequency pixel having a fourth weight; adjusting the first weight and the third weight and calculating the weighted sum of the first low-frequency pixel and the second low-frequency pixel, to generate low-frequency pixel data; adjusting the second weight and the fourth weight and calculating the weighted sum of the first high-frequency pixel and the second high-frequency pixel, to generate high-frequency pixel data; and calculating the sum of the low-frequency pixel data and the high-frequency pixel data, to output the de-noised pixel.

10. 发明授权

US09516261B2 Real-time false color reduction system and method for color interpolation 有权
标题翻译：实时假色减色系统及颜色插值方法
公开(公告)号：US09516261B2
公开(公告)日：2016-12-06
申请号：US14479801
申请日：2014-09-08
申请人： Realtek Semiconductor Corp.
发明人： Shih-Tse Chen , Wen-Tsung Huang
IPC分类号： H04N19/102 , H04N7/01 , H04N19/132 , H04N9/04
CPC分类号： H04N7/0145 , H04N9/045 , H04N19/132 , H04N2209/046
摘要： A false color reduction system and method for color interpolation is disclosed in the present invention. The false color reduction system includes a red/blue color interpolation signal reference level estimator, a red/blue color interpolation signal noise analyzer and a red/blue color interpolation signal noise regulator. The red/blue color interpolation signal reference level estimator receives a RGB image array and a red/blue color interpolation signal of the RGB image array to generate a green difference signal. The red/blue color interpolation signal reference level estimator generates a red/blue reference level according to the green difference signal and an average signal. The red/blue color interpolation signal noise analyzer analyzes received signals to generate analysis result. The red/blue color interpolation signal noise regulator receives the analysis result to correct the red/blue color interpolation signal.
摘要翻译：在本发明中公开了一种用于颜色插值的假色减缩系统和方法。假色减色系统包括红/蓝色插值信号参考电平估计器，红/蓝色插值信号噪声分析仪和红/蓝色插值信号噪声调节器。红色/蓝色内插信号参考电平估计器接收RGB图像阵列的RGB图像阵列和红色/蓝色插值信号以产生绿色差分信号。红色/蓝色插值信号参考电平估计器根据绿色差信号和平均信号产生红/蓝基准电平。红/蓝色插值信号噪声分析仪分析接收信号，生成分析结果。红色/蓝色插值信号噪声调节器接收分析结果以校正红/蓝色插值信号。

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