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11. 发明公开

EP2311248A1 COLOR ENHANCEMENT FOR DIGITAL IMAGES 审中-公开
标题翻译：色彩增强数字图像
公开(公告)号：EP2311248A1
公开(公告)日：2011-04-20
申请号：EP09774378.5
申请日：2009-06-30
申请人： Qualcomm Incorporated(1/3)
发明人： HUNG, Szepo, Robert , JIANG, Xiaoyun , LI, Hsiang-tsun
IPC分类号： H04N1/62
CPC分类号： H04N1/62 , H04N1/6005 , H04N1/628
摘要： Techniques for identifying and enhancing colors in a digital image associated with one or more target color shades. In an embodiment, the target color shades may include a shade of blue associated with the sky, a shade of green associated with outdoor foliage, or the color red. In an embodiment, the blue chroma (Cb) and red chroma (Cr) coordinates of a pixel are evaluated to determine whether to apply an enhancement factor. The enhancement factor may incorporate an exposure index (EI) auxiliary enhancement factor, a color temperature (D) auxiliary enhancement factor, and a luminance (Y) of each pixel. Further aspects for implementing the techniques in software and hardware are disclosed.

12. 发明公开

EP2070312A1 A HAND JITTER REDUCTION SYSTEM FOR CAMERAS 审中-公开
标题翻译：魔术师魔术师FÜRKAMERAS
公开(公告)号：EP2070312A1
公开(公告)日：2009-06-17
申请号：EP07710242.4
申请日：2007-01-20
申请人： QUALCOMM Incorporated
发明人： QUAN, Shuxue , CHIU, Chinchuan Andrew , JIANG, Xiaoyun , LI, Jingqiang , NOYES, Ying Xie , ATANASSOV, Kalin
IPC分类号： H04N5/235 , H04N5/243
CPC分类号： H04N5/23248 , H04N5/2327 , H04N5/2352 , H04N5/2353 , H04N5/243 , H04N2101/00
摘要： A camera system in normal mode and hand jitter reduction (hjr) mode may comprise generating a first exposure time-gain product by multiplying the normal mode exposure time with the normal mode gain. It may further comprise modifying the normal mode exposure time and gain and multiplying these modified parameters to generate a second exposure time-gain product for a hjr mode that reduces the difference between the first exposure time-gain product and the second exposure time-gain product. To reduce the difference the normal mode frame rate may also be modified. Operation of a camera in normal mode may be in response to a sensed light level being above a threshold. The hjr mode may be selected by the user while the camera is operating. The hjr mode may be used in response to a sensed light level being lower than the threshold.
摘要翻译：正常模式和手抖动降低（hjr）模式的相机系统可以包括通过将正常模式曝光时间与正常模式增益相乘来产生第一曝光时间增益积。其还可以包括修改正常模式曝光时间并增益并且乘以这些修改的参数以产生用于减小第一曝光时间增益乘积和第二曝光时间增益乘积之间的差的hjr模式的第二曝光时间增益乘积。为了减小差异，也可以修改正常模式帧速率。在正常模式下照相机的操作可以响应于感测到的光水平高于阈值。当相机运行时，用户可以选择hjr模式。可以响应于感测到的光水平低于阈值而使用hjr模式。

13. 发明公开

EP2011343A2 WEIGHT ADJUSTMENT IN COLOR CORRECTION 审中-公开
标题翻译：权重调整色彩校正
公开(公告)号：EP2011343A2
公开(公告)日：2009-01-07
申请号：EP07761387.5
申请日：2007-04-26
申请人： QUALCOMM Incorporated
发明人： QUAN, Shuxue , CHIU, Chinchuan Andrew , JIANG, Xiaoyun
IPC分类号： H04N9/67 , H04N1/60
CPC分类号： H04N9/67 , H04N1/6086 , H04N1/628
摘要： Automatic weight adjustment (AWA) to derive an optimal color correction matrix may address unbalanced color reproduction performance among different illuminations and/or unbalanced color reproduction performance for specific memory colors. AWA may emphasize particular colors and equalize color performance. AWA may be implemented in an automatic process with optional manual operation.

14. 发明公开

EP1932095A2 VIDEO FRAME MOTION-BASED AUTOMATIC REGION-OF-INTEREST DETECTION 审中-公开
标题翻译：感兴趣区域视频在单基于运动的自动检测
公开(公告)号：EP1932095A2
公开(公告)日：2008-06-18
申请号：EP06816542.2
申请日：2006-10-05
申请人： QUALCOMM Incorporated
发明人： WANG, Haohong , QUAN, Shuxue , EL-MALEH, Khaled Helmi , CHIU, Chinchuan Andrew , JIANG, Xiaoyun
IPC分类号： G06K9/00 , H04N7/26
CPC分类号： G06K9/00234 , H04N19/17 , H04N19/61
摘要： The disclosure is directed to techniques for region-of-interest (ROI) video processing based on low-complexity automatic ROI detection within video frames of video sequences. The low-complexity automatic ROI detection may be based on characteristics of video sensors within video communication devices. In other cases, the low-complexity automatic ROI detection may be based on motion information for a video frame and a different video frame of the video sequence. The disclosed techniques include a video processing technique capable of tuning and enhancing video sensor calibration, camera processing, ROI detection, and ROI video processing within a video communication device based on characteristics of a specific video sensor. The disclosed techniques also include a sensor-based ROI detection technique that uses video sensor statistics and camera processing side- information to improve ROI detection accuracy. The disclosed techniques also include a motion-based ROI detection technique that uses motion information obtained during motion estimation in video processing.

15. 发明授权

EP1805982B1 APPARATUS, SYSTEM, AND METHOD FOR OPTIMIZING GAMMA CURVES FOR DIGITAL IMAGE DEVICES 有权
标题翻译：设备，系统和方法的伽玛曲线，数码成像装置的优化
公开(公告)号：EP1805982B1
公开(公告)日：2008-04-09
申请号：EP05814117.7
申请日：2005-10-27
申请人： QUALCOMM INCORPORATED
发明人： QUAN, Shuxue , CHIU, Andrew Chinchuan , JIANG, Xiaoyun
IPC分类号： H04N1/60 , H04N9/69
CPC分类号： H04N9/69 , H04N1/6077 , H04N1/6083
摘要： An apparatus, system, and method provide optimization of color space conversion using a joint quality metric representing differences between reference human visual representations and converted device captured image representations in a perceptual uniform color space, where the conversion includes transforming a nonstandard color space (RGB) to a perceptual standard color space (sRGB) and where the joint quality metric includes a color portion, a noise portion, and a contrast portion. An optical sensor produces a digital reference signal when capturing an image of a reference source such as a Macbeth ColorChecker color rendition chart. After white balancing and color correcting the digital reference signal, the gamma curve parameters are determined by minimizing the joint quality metric which is based on differences, within a uniform perceptual color space such as CIELAB, between the gamma curve compensated signal and the standard values for the reference source. The noise portion and contrast portion take into account the noise and the contrast of the gamma curve compensated signal resulting in a gamma curve parameter that is optimized with respect to color, noise, and contrast.

16. 发明公开

EP4226322A1 SEGMENTATION FOR IMAGE EFFECTS 审中-实审
公开(公告)号：EP4226322A1
公开(公告)日：2023-08-16
申请号：EP21786672.2
申请日：2021-09-07
申请人： QUALCOMM Incorporated
发明人： TSAI, Chung-Chi , MADHAVAN, Sreevatsan , CHUANG, Shang-Chih , HSU, Kuang-Jui , DAYANA, Venkata Ravi Kiran , JIANG, Xiaoyun
IPC分类号： G06T7/11 , G06T7/194

17. 发明公开

EP3262603A1 DIGITAL ZOOM METHODS AND SYSTEMS 审中-公开
标题翻译：数字变焦方法和系统
公开(公告)号：EP3262603A1
公开(公告)日：2018-01-03
申请号：EP16711031.1
申请日：2016-02-05
申请人： Qualcomm Incorporated
发明人： LI, Feng , FAN, Shu Fei , SAHU, Shilpi , LI, Min , CHEN, Yunqiang , JIANG, Xiaoyun
IPC分类号： G06T3/40
CPC分类号： H04N5/23296 , G06T3/40 , G06T3/4007 , G06T5/003
摘要： In some cases, conventional digital zoom techniques can lead to poor quality images. Disclosed are systems and methods for improving the quality of images generated by digital zoom. For example, in some embodiments, a parallel structure is utilized where an image is passed through a sharpener and a 2D directional upscaler at the same time. Upscaling operations are then performed on the sharpened image. The upscaled sharpened image is added to the output of the 2D directional upscaler to produce an enhanced image.

18. 发明授权

EP2055093B1 ADAPTIVE SPATIAL IMAGE FILTER FOR FILTERING IMAGE INFORMATION 有权
标题翻译：自适应空间图像滤波器用于滤波图像信息
公开(公告)号：EP2055093B1
公开(公告)日：2017-11-01
申请号：EP07813719.7
申请日：2007-08-02
申请人： QUALCOMM Incorporated
发明人： JIANG, Xiaoyun , CHIU, Chinchuan Andrew , LIU, Dennis , CHAN, Victor H. , ZHONG, Xin
IPC分类号： H04N5/14 , H04N5/208 , H04N1/409 , G06T5/00
CPC分类号： H04N5/142 , G06T5/002 , G06T5/003 , G06T2207/20012 , H04N1/4092 , H04N5/208

19. 发明公开

EP3025302A1 SYSTEM AND METHOD OF CORRECTING IMAGE ARTIFACTS 有权
标题翻译： VORRICHTUNG UND VERFAHREN ZUR KORREKTUR VON BILDARTEFAKTEN
公开(公告)号：EP3025302A1
公开(公告)日：2016-06-01
申请号：EP14750087.0
申请日：2014-07-21
申请人： QUALCOMM INCORPORATED
发明人： SHU, Xianbiao , JIANG, Xiaoyun , XIONG, Weihua , LIU, Weiliang
IPC分类号： G06T5/00
CPC分类号： G06T5/005 , G06T2207/10024 , H04N1/58
摘要： Certain aspects relate to systems and techniques for correction of color artifacts including both color aberration and color spot artifacts using a unified framework. For example, both color aberration and color spot artifacts can be corrected using a post-processing method implementing directional median filtering on chroma channels. A pixel-by-pixel correction ratio map can be built by analyzing the luma and chroma components of the image to indicate a type of color artifact associated with each pixel in the image, and a directional median filter can be selected for each pixel based on the corresponding correction ratio map value.
摘要翻译：某些方面涉及使用统一框架来校正彩色伪影的系统和技术，包括色差和色斑伪像。例如，可以使用在色度通道上实现方向中值滤波的后处理方法来校正色差和色斑伪影。可以通过分析图像的亮度和色度分量来构建像素逐像素校正比图，以指示与图像中的每个像素相关联的颜色伪像的类型，并且可以基于每个像素选择方向中值滤波器相应的校正比图值。

20. 发明公开

EP2446414A1 LENS ROLL-OFF CORRECTION OPERATION USING VALUES CORRECTED BASED ON BRIGHTNESS INFORMATION 有权
标题翻译： ROLL-OFF镜头校正信息亮校正后值的基础
公开(公告)号：EP2446414A1
公开(公告)日：2012-05-02
申请号：EP10730927.0
申请日：2010-06-21
申请人： QUALCOMM Incorporated
发明人： JIANG, Xiaoyun , HUNG, Szepo, R. , LI, Hsiang-Tsun
IPC分类号： G06T5/00 , H04N5/235 , H04N5/217
CPC分类号： H04N5/235 , G06T5/006 , G06T2207/20004 , G06T2207/20021 , H04N5/2178
摘要： A method is disclosed that includes receiving image data and calculating brightness information of the image data. The method includes correcting at least one lens roll-off value to be used in a lens roll-off correction operation based on the brightness information. The method also includes performing the lens roll-off correction operation on the image data using the at least one corrected lens roll-off value.

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