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1. 发明公开

EP1067775A3 Digital imaging control with selective intensity resolution enhancement 审中-公开
标题翻译：与选择性增加的动态范围的数字图像记录控制
公开(公告)号：EP1067775A3
公开(公告)日：2002-08-07
申请号：EP00302086.4
申请日：2000-03-15
申请人： Texas Instruments Incorporated
发明人： Chen, Zhiliang Julian, , Dierschke, Eugene G., , Clynes, Steven Derek, , Liu, Anli,
IPC分类号： H04N5/16 , H03M1/18
CPC分类号： H04N5/3675 , H04N5/16 , H04N5/20 , H04N5/243
摘要： Image enhancement is automatically achieved by calibrating the reference voltage and gain of a differential amplifier and the integration interval so as to provide an input to a differential analog to digital converter (ADC) that utilizes the full dynamic range of the ADC. When used with a CMOS array, the imaging logic can be fabricated on a single chip with the array using combinational logic for fast, inexpensive calibration. Another advantageous feature is the ability to expand a desired portion of the luminance spectrum of the image in order to increase the digital resolution of the resulting image for that portion of the spectrum of interest.

2. 发明授权

EP1045578B1 Filtering of defective picture elements in digital imagers 有权
标题翻译：在数字成像器有缺陷图像元素的滤波
公开(公告)号：EP1045578B1
公开(公告)日：2003-08-20
申请号：EP00302082.3
申请日：2000-03-15
申请人： Texas Instruments Incorporated
发明人： Chen, Zhiliang Julian, , Dierschke, Eugene G., , Clynes, Steven Derek, , Liu, Anli,
IPC分类号： H04N5/217
CPC分类号： H04N5/3675 , H04N5/16 , H04N5/20 , H04N5/243

3. 发明公开

EP1067775A2 Digital imaging control with selective intensity resolution enhancement 审中-公开
标题翻译：与选择性增加的动态范围的数字图像记录控制
公开(公告)号：EP1067775A2
公开(公告)日：2001-01-10
申请号：EP00302086.4
申请日：2000-03-15
申请人： Texas Instruments Incorporated
发明人： Chen, Zhiliang Julian, , Dierschke, Eugene G., , Clynes, Steven Derek, , Liu, Anli,
IPC分类号： H04N5/14 , H04N5/16
CPC分类号： H04N5/3675 , H04N5/16 , H04N5/20 , H04N5/243
摘要： Image enhancement is automatically achieved by calibrating the reference voltage and gain of a differential amplifier and the integration interval so as to provide an input to a differential analog to digital converter (ADC) that utilizes the full dynamic range of the ADC. When used with a CMOS array, the imaging logic can be fabricated on a single chip with the array using combinational logic for fast, inexpensive calibration. Another advantageous feature is the ability to expand a desired portion of the luminance spectrum of the image in order to increase the digital resolution of the resulting image for that portion of the spectrum of interest.

4. 发明公开

EP1045578A3 Filtering of defective picture elements in digital imagers 有权
标题翻译：在数字成像器有缺陷图像元素的滤波
公开(公告)号：EP1045578A3
公开(公告)日：2000-11-08
申请号：EP00302082.3
申请日：2000-03-15
申请人： Texas Instruments Incorporated
发明人： Chen, Zhiliang Julian, , Dierschke, Eugene G., , Clynes, Steven Derek, , Liu, Anli,
IPC分类号： H04N5/217
CPC分类号： H04N5/3675 , H04N5/16 , H04N5/20 , H04N5/243
摘要： Defective pixels in a CMOS array give rise to spot noise that diminishes the integrity of the resulting image. Because CMOS arrays and digital logic can be fabricated on the same integrated circuit using the same processing technology and relatively inexpensive and fast circuit can be employed to digitally filter the pixel data stream and to identify pixels having values that do not fall in the range defined by the immediately neighboring pixels and the deviate from the neighboring pixels by more than a threshold amount. Such conditions would indicate that the deviation is caused by a defective pixel rather than by desired image data. The threshold amount can be preprogrammed or can be provided by a user or can be dynamically set using feedback indicating image quality. The filter would also provide a solution for other sensors such as CCD.

5. 发明公开

EP1045578A2 Filtering of defective picture elements in digital imagers 有权
标题翻译：数字成像器中有缺陷的图像元素的滤波
公开(公告)号：EP1045578A2
公开(公告)日：2000-10-18
申请号：EP00302082.3
申请日：2000-03-15
申请人： Texas Instruments Incorporated
发明人： Chen, Zhiliang Julian, , Dierschke, Eugene G., , Clynes, Steven Derek, , Liu, Anli,
IPC分类号： H04N5/217
CPC分类号： H04N5/3675 , H04N5/16 , H04N5/20 , H04N5/243
摘要： Defective pixels in a CMOS array give rise to spot noise that diminishes the integrity of the resulting image. Because CMOS arrays and digital logic can be fabricated on the same integrated circuit using the same processing technology and relatively inexpensive and fast circuit can be employed to digitally filter the pixel data stream and to identify pixels having values that do not fall in the range defined by the immediately neighboring pixels and the deviate from the neighboring pixels by more than a threshold amount. Such conditions would indicate that the deviation is caused by a defective pixel rather than by desired image data. The threshold amount can be preprogrammed or can be provided by a user or can be dynamically set using feedback indicating image quality. The filter would also provide a solution for other sensors such as CCD.
摘要翻译： CMOS阵列中的有缺陷像素会产生斑点噪声，从而降低所得图像的完整性。因为可以使用相同的处理技术在相同的集成电路上制造CMOS阵列和数字逻辑，并且可以采用相对便宜和快速的电路来数字地过滤像素数据流并且识别具有不落入由直接相邻的像素以及与相邻像素的偏离大于阈值量。这样的条件将表明偏差是由有缺陷的像素而不是由期望的图像数据引起的。阈值量可以被预先编程或者可以由用户提供，或者可以使用指示图像质量的反馈来动态设置。该滤光片还将为诸如CCD等其他传感器提供解决方案。

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