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公开(公告)号：US11663698B2
公开(公告)日：2023-05-30
申请号：US17118465
申请日：2020-12-10
Applicant: Realtek Semiconductor Corp.
Inventor： Chung-Yan Chih , Wen-Tsung Huang
CPC classification number: G06T3/4053 , G06T5/002 , G06T7/20
Abstract: A signal processing device includes a first frame buffer configured to store a first frame, a second frame buffer configured to store a second frame and a processor. The processor is coupled to the first frame buffer and the second frame buffer and is configured to perform a first image processing procedure according to the first frame and the second frame to obtain a super resolution difference value corresponding to each pixel of the first frame, perform a second image processing procedure according to the first frame and the second frame to obtain a noise reduction value corresponding to each pixel of the first frame, selectively add the super resolution difference value and the noise reduction value to the corresponding pixel of the first frame to generate an output frame and store the output frame in the second frame buffer as the second frame.
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公开(公告)号：US11488286B2
公开(公告)日：2022-11-01
申请号：US17015131
申请日：2020-09-09
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Ching-Ju Hsiao , Wen-Tsung Huang
Abstract: A method for determining and suppressing Moiré pattern, and a circuit system thereof are provided. In the method, a brightness value of pixels of an image can be obtained. For each of the pixels of the image, a detection window is provided for calculating a Moiré pattern response value of a plurality of critical pixels and corresponding adjacent pixels. The critical pixels within the detection window are selected for determining a type of Moiré pattern. After, it is to compare the brightness values of the critical pixels and the corresponding adjacent pixels within the detection window. The comparison results can be used to determine the brightness characteristics of the pixels through a statistical method. Moiré pattern response value and the statistics are used to determine type and position of the Moiré pattern. A color noise suppression process is performed on the pixels to be determined as Moiré pattern.
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3.发明授权公开(公告)号：US10943332B2
公开(公告)日：2021-03-09
申请号：US16546237
申请日：2019-08-20
Applicant: Realtek Semiconductor Corp.
Inventor： Zhong-Yi Qiu , Wen-Tsung Huang
Abstract: An image adjustment method includes: receiving an image, and retrieving R, G and B values and an infrared ray (IR) value from the image; dividing the image into a plurality of blocks; generating initial compensation coefficients respectively corresponding to the R, G, B and IR values for each block within the blocks; and performing following operations upon each block within the blocks: adjusting initial compensation coefficients of a current block according to a plurality of adjacent blocks next to the current block, in order to generate adjusted compensation coefficients of the current block; and using the adjusted compensation coefficients of the current block to perform IR crosstalk compensation upon the current block.
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公开(公告)号：US20200286210A1
公开(公告)日：2020-09-10
申请号：US16676858
申请日：2019-11-07
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Ching-Ju Hsiao , Wen-Tsung Huang
Abstract: An image processing method and an electronic device thereof are provided. The image processing method includes performing a color processing procedure on the target pixel and correspondingly obtaining a plurality of first processed pixels. The color processing procedure includes: determining, according to the color saturation value of the target pixel and a color partitioning parameter, that the target pixel is located in a low color saturation region, a medium color saturation region, or a high color saturation region; performing suppression processing on the target pixel located in the low color saturation region, to suppress the color saturation value of the target pixel into a grayscale value; performing progressive suppression processing on the target pixel located in the medium color saturation region, to suppress the color saturation value of the target pixel according to a suppression ratio; and maintaining the original color saturation value of the target pixel located in the high color saturation region.
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公开(公告)号：US10586313B2
公开(公告)日：2020-03-10
申请号：US16059607
申请日：2018-08-09
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Ching-Ju Hsiao , Wen-Tsung Huang
Abstract: The present disclosure provides an electronic apparatus and an image processing method for image edge enhancement, which adjust each edge pixel located in an image edge of an input image. More specifically, the electronic apparatus and the image processing method adaptively adjust a present pixel that is taken as the edge pixel according to the position of the present pixel in the image edge and the input image, thereby outputting an adjusted pixel value. Accordingly, the electronic apparatus and the image processing method can enhance the image edge according to the actual image condition.
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Patent Agency Ranking
6.发明授权公开(公告)号：US09516261B2
公开(公告)日：2016-12-06
申请号：US14479801
申请日：2014-09-08
Applicant: Realtek Semiconductor Corp.
Inventor： Shih-Tse Chen , Wen-Tsung Huang
IPC: H04N19/102 , H04N7/01 , H04N19/132 , H04N9/04
CPC classification number: H04N7/0145 , H04N9/045 , H04N19/132 , H04N2209/046
Abstract: 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.
Abstract translation: 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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公开(公告)号：US20200265559A1
公开(公告)日：2020-08-20
申请号：US16546311
申请日：2019-08-21
Applicant: Realtek Semiconductor Corp.
Inventor： Zhong-Yi Qiu , Wen-Tsung Huang
Abstract: The present invention provides an image adjustment method and associated image processing circuit for performing the following operations upon each pixel of an image: obtaining R, G, B values and infrared ray (IR) value corresponding to the current pixel; generating multiple initial compensation parameters corresponding to the R, G, B values; generating an over-compensation parameter according to the R, G, B and IR values; comparing the over-compensation parameter with at least one threshold value to generate a compensation adjustment coefficient; and performing IR crosstalk compensation upon the image with the compensation adjustment coefficient.
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公开(公告)号：US10748019B2
公开(公告)日：2020-08-18
申请号：US16108430
申请日：2018-08-22
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Zhong-Yi Qiu , Wen-Tsung Huang , Kai Liu
Abstract: An image processing method and an electronic apparatus for foreground image extraction include steps: (A) acquiring frame images of a dynamic image, wherein each frame image has an RGB image and an IR image; (B) acquiring an RGB image representing a dark state as an RGB capture image, acquiring an IR image representing a light state as an IR light frame image, and acquiring one IR image representing the dark state as an IR dark frame image; (C) calculating a difference image between the IR light frame image and the IR dark frame image and binarizing the difference image to generate a binarized image; and (D) acquiring a plurality of foreground pixels corresponding to an IR foreground part of the binarized image of the RGB capture image and taking the foreground pixels as the foreground image, thereby reducing the impact of ambient light, background noise and calculation.
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公开(公告)号：US20180322615A1
公开(公告)日：2018-11-08
申请号：US15725291
申请日：2017-10-05
Applicant: Realtek Semiconductor Corp.
Inventor： Ching-Ju Hsiao , Kai Liu , Wen-Tsung Huang
CPC classification number: G06T5/002 , G06T5/003 , G06T5/20 , G06T7/13 , G06T2207/10024 , G06T2207/20192
Abstract: An image processing method for processing an input image is provided. The image processing method includes the following steps: selecting a pixel of the input image; determining if the pixel is a first image edge according to at least one first calibrated pixel and at least one second pixel in the input image, in which the first calibrated pixel corresponds to at least one first pixel in the input image; and replacing a high frequency component of at least one channel of the pixel with a first calibrating high frequency component to generate a calibrated pixel if the pixel is not the first image edge, and maintaining the pixel as the calibrated pixel if the pixel is the first image edge.
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公开(公告)号：US09779476B2
公开(公告)日：2017-10-03
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.
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