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1.发明申请IMAGE CORRECTION METHOD USING APPROXIMATELY NON-LINEAR REGRESSION APPROACH AND RELATED IMAGE CORRECTION CIRCUIT 有权使用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：US20140193079A1
公开(公告)日：2014-07-10
申请号：US13858101
申请日：2013-04-08
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Shih-Tse Chen , Hao-Tien Chiang
IPC: G06K9/52
CPC classification number: G06T5/006
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US10055820B2
公开(公告)日：2018-08-21
申请号：US15439357
申请日：2017-02-22
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Tsung-Hsuan Li , Hao-Tien Chiang , Shih-Tse Chen
CPC classification number: G06T5/002 , G06K9/4661 , G06K9/6276 , G06T5/50 , G06T2207/10016 , G06T2207/20182 , G06T2207/20216 , G06T2207/20224
Abstract: 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.
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公开(公告)号：US10223778B2
公开(公告)日：2019-03-05
申请号：US15476209
申请日：2017-03-31
Applicant: REALTEK SEMICONDUCTOR CORP.
Inventor： Hao-Tien Chiang , Tsung-Hsuan Li , Shih-Tse Chen
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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Patent Agency Ranking
4.发明授权Image correction method using approximately non-linear regression approach and related image correction circuit 有权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
Applicant: Realtek Semiconductor Corp.
Inventor： Shih-Tse Chen , Hao-Tien Chiang
IPC: G06T5/00
CPC classification number: G06T5/006
Abstract: 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.
Abstract translation: 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。
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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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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：US20150373235A1
公开(公告)日：2015-12-24
申请号：US14748248
申请日：2015-06-24
Applicant: Realtek Semiconductor Corp.
Inventor： Hao-Tien Chiang , Shih-Tse Chen
CPC classification number: H04N5/213 , G06T5/002 , G06T2207/10016 , G06T2207/10024 , G06T2207/20182 , H04N5/21 , H04N5/217 , H04N5/2352
Abstract: A decryption engine includes an update circuit, a key generator, a decryption circuit and a detection circuit. The update circuit generates a first updating information based on a premise of that a currently received frame is encrypted, and generates a second updating information based on a premise of that the currently received frame is non-encrypted. The key generator produces a first key according to the first updating information, and produces a second key according to the second updating information. The decryption circuit generates a first decrypted frame according to the first key and the currently received frame, and generates a second decrypted frame according to the second key and the currently received frame. The detection circuit detects whether the currently received frame is decrypted according to the first decrypted frame and the second decrypted frame, to generate an encryption detection result.
Abstract translation: 解密引擎包括更新电路，密钥生成器，解密电路和检测电路。 更新电路基于当前接收到的帧被加密的前提产生第一更新信息，并且基于当前接收到的帧未被加密的前提生成第二更新信息。 密钥发生器根据第一更新信息产生第一密钥，并根据第二更新信息产生第二密钥。 解密电路根据第一密钥和当前接收到的帧生成第一解密帧，并根据第二密钥和当前接收的帧生成第二解密帧。 检测电路根据第一解密帧和第二解密帧来检测当前接收到的帧是否被解密，以产生加密检测结果。
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