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1. 发明申请

US20060215912A1 Dynamically scaled file encoding 有权
公开(公告)号：US20060215912A1
公开(公告)日：2006-09-28
申请号：US11087226
申请日：2005-03-22
申请人： Shizhong Liu , Phan Do , William Huang , Charles Han , Suhail Jalil
发明人： Shizhong Liu , Phan Do , William Huang , Charles Han , Suhail Jalil
IPC分类号： G06K9/36
CPC分类号： H04N19/192 , H04N19/115 , H04N19/124 , H04N19/132 , H04N19/136 , H04N19/147 , H04N19/149 , H04N19/15 , H04N19/172 , H04N19/18 , H04N19/60
摘要： A dynamically scaled file encoding method and apparatus are disclosed. A file encoding system using JPEG encoding can be configured to produce relatively constant compressed file sizes irrespective of the initial file size and file contents. The system retrieves an initial file or image that is to be compressed and determines a target bit rate corresponding to the compressed file. The target bit rate is used to determine an initial scaling factor. The initial file is encoded using a JPEG encoder having coefficients scaled by the initial scaling factor. The resultant bit rate can be adjusted in a second loop if greater than the desired bit rate. To adjust the bit rate, a recomputed scaling factor is determined from the resultant bit rate. The initial file is then encoded with coefficients scaled by the recomputed scaling factor to achieve a bit rate that is within the target bit rate.

2. 发明授权

US07567722B2 Dynamically scaled file encoding 有权
标题翻译：动态缩放的文件编码
公开(公告)号：US07567722B2
公开(公告)日：2009-07-28
申请号：US11087226
申请日：2005-03-22
申请人： Shizhong Liu , Phan L. Do , William Yee-Ming Huang , Charles S. Han , Suhail Jalil
发明人： Shizhong Liu , Phan L. Do , William Yee-Ming Huang , Charles S. Han , Suhail Jalil
IPC分类号： G06K9/46 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/192 , H04N19/115 , H04N19/124 , H04N19/132 , H04N19/136 , H04N19/147 , H04N19/149 , H04N19/15 , H04N19/172 , H04N19/18 , H04N19/60
摘要： A dynamically scaled file encoding method and apparatus are disclosed. A file encoding system using JPEG encoding can be configured to produce relatively constant compressed file sizes irrespective of the initial file size and file contents. The system retrieves an initial file or image that is to be compressed and determines a target bit rate corresponding to the compressed file. The target bit rate is used to determine an initial scaling factor. The initial file is encoded using a JPEG encoder having coefficients scaled by the initial scaling factor. The resultant bit rate can be adjusted in a second loop if greater than the desired bit rate. To adjust the bit rate, a recomputed scaling factor is determined from the resultant bit rate. The initial file is then encoded with coefficients scaled by the recomputed scaling factor to achieve a bit rate that is within the target bit rate.
摘要翻译：公开了一种动态缩放的文件编码方法和装置。使用JPEG编码的文件编码系统可以被配置为产生相对恒定的压缩文件大小，而与初始文件大小和文件内容无关。系统检索要压缩的初始文件或图像，并确定与压缩文件对应的目标比特率。目标比特率用于确定初始缩放因子。使用具有由初始缩放因子缩放的系数的JPEG编码器对初始文件进行编码。如果大于所需比特率，则可以在第二循环中调整所得比特率。为了调整比特率，从所得比特率确定重新计算的比例因子。然后用由重新计算的缩放因子缩放的系数对初始文件进行编码，以实现在目标比特率内的比特率。

3. 发明申请

US20090202158A1 ROTATIONAL TRANSCODING FOR JPEG OR OTHER CODING STANDARDS 有权
标题翻译： JPEG或其他编码标准的转换
公开(公告)号：US20090202158A1
公开(公告)日：2009-08-13
申请号：US12030826
申请日：2008-02-13
申请人： Hau Hwang , Hsiang-Tsun Li , Shizhong Liu
发明人： Hau Hwang , Hsiang-Tsun Li , Shizhong Liu
IPC分类号： G06K9/36
CPC分类号： H04N19/00775 , G06T3/602 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/40 , H04N19/48 , H04N19/59 , H04N19/60
摘要： This disclosure describes techniques for rotating an encoded image, such as an image encoded according to a JPEG standard. In one example, a method for rotating an encoded image comprising reordering minimum coded units (MCUs) of the encoded image according to a specified rotation of the encoded image, rotating image data within the MCUs according to the specified rotation, and generating a rotated version of the encoded image comprising the reordered MCUs and the rotated image data within the MCUs.
摘要翻译：本公开描述了用于旋转编码图像的技术，例如根据JPEG标准编码的图像。在一个示例中，一种用于旋转编码图像的方法，包括根据编码图像的指定旋转对编码图像的最小编码单元（MCU）进行排序，根据指定的旋转旋转图像数据，并产生旋转版本包括重新排序的MCU和MCU内旋转的图像数据的编码图像。

4. 发明授权

US08977064B2 Rotational transcoding for JPEG or other coding standards 有权
标题翻译：用于JPEG或其他编码标准的旋转转码
公开(公告)号：US08977064B2
公开(公告)日：2015-03-10
申请号：US12030826
申请日：2008-02-13
申请人： Hau Hwang , Hsiang-Tsun Li , Shizhong Liu
发明人： Hau Hwang , Hsiang-Tsun Li , Shizhong Liu
IPC分类号： G06K9/36 , H04N19/60 , G06T3/60 , H04N19/132 , H04N19/18 , H04N19/59 , H04N19/176 , H04N19/40 , H04N19/48
CPC分类号： H04N19/00775 , G06T3/602 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/40 , H04N19/48 , H04N19/59 , H04N19/60
摘要： This disclosure describes techniques for rotating an encoded image, such as an image encoded according to a JPEG standard. In one example, a method for rotating an encoded image comprising reordering minimum coded units (MCUs) of the encoded image according to a specified rotation of the encoded image, rotating image data within the MCUs according to the specified rotation, and generating a rotated version of the encoded image comprising the reordered MCUs and the rotated image data within the MCUs.
摘要翻译：本公开描述了用于旋转编码图像的技术，例如根据JPEG标准编码的图像。在一个示例中，一种用于旋转编码图像的方法，包括根据编码图像的指定旋转对编码图像的最小编码单元（MCU）进行排序，根据指定的旋转旋转图像数据，并产生旋转版本包括重新排序的MCU和MCU内旋转的图像数据的编码图像。

5. 发明申请

US20130201359A1 METHOD AND APPARATUS FOR UNATTENDED IMAGE CAPTURE 有权
标题翻译：用于未知图像捕获的方法和装置
公开(公告)号：US20130201359A1
公开(公告)日：2013-08-08
申请号：US13612215
申请日：2012-09-12
申请人： Hung-Hsin Wu , Karthikeyan Shanmugavadivelu , Shizhong Liu , Wan Shun Vincent Ma , Adarsh Abhay Golikeri
发明人： Hung-Hsin Wu , Karthikeyan Shanmugavadivelu , Shizhong Liu , Wan Shun Vincent Ma , Adarsh Abhay Golikeri
IPC分类号： H04N5/225
CPC分类号： H04N5/23219 , G06T7/70 , G06T2207/10004 , G06T2207/30201 , H04N5/23222
摘要： Described is a method and apparatus for unattended image capture that can identify subjects or faces within an image captured with an image sensor. The methods and apparatus may then score the image based, at least in part, on scores of detected subjects or faces in the image, scores of facial expressions, a focus score, exposure score, stability score, or audio score. If the score of the image is above a threshold, a snapshot image may be stored to a data store on the imaging device. If the score of the image is below a threshold, one or more audible prompts may be generated indicating that subjects should change positions, smile or remain more still during the image capture process.
摘要翻译：描述了一种用于无人值守的图像捕捉的方法和装置，其可以识别用图像传感器捕获的图像内的对象或面部。方法和装置可以至少部分地基于图像中检测到的对象或面部的分数，面部表情的分数，焦点得分，曝光分数，稳定性分数或音频分数来评分图像。如果图像的分数高于阈值，则快照图像可以被存储到成像装置上的数据存储。如果图像的分数低于阈值，则可能产生一个或多个可听见的提示，指示受试者在图像捕获过程期间应该改变位置，微笑或保持更多。

6. 发明授权

US07742644B2 Processing of images in imaging systems 有权
标题翻译：成像系统中的图像处理
公开(公告)号：US07742644B2
公开(公告)日：2010-06-22
申请号：US11414044
申请日：2006-04-27
申请人： Hau Hwang , Hsiang-Tsun Li , Shizhong Liu
发明人： Hau Hwang , Hsiang-Tsun Li , Shizhong Liu
IPC分类号： G06K9/36
CPC分类号： H04N1/41 , H04N1/33307 , H04N2201/33357 , H04N2201/33378
摘要： The imaging system converts raw data for an image to formatted data concurrently with compressing the formatted data for the image. The exemplary imaging system includes an image processor for generating blocks of formatted data from raw image data. The exemplary imaging system also includes an image compressor for compressing the blocks of formatted data. The compressor compresses one or more of the blocks while the image processor generates one or more blocks of formatted data.
摘要翻译：成像系统通过压缩图像的格式化数据同时将图像的原始数据转换为格式化数据。示例性成像系统包括用于从原始图像数据生成格式化数据块的图像处理器。该示例性成像系统还包括用于压缩格式化数据块的图像压缩器。当图像处理器生成一个或多个格式化数据块时，压缩器压缩一个或多个块。

7. 发明申请

US20070165955A1 Processing of images in imaging systems 有权
标题翻译：成像系统中的图像处理
公开(公告)号：US20070165955A1
公开(公告)日：2007-07-19
申请号：US11414044
申请日：2006-04-27
申请人： Hau Hwang , Hsiang-Tsun Li , Shizhong Liu
发明人： Hau Hwang , Hsiang-Tsun Li , Shizhong Liu
IPC分类号： G06K9/36
CPC分类号： H04N1/41 , H04N1/33307 , H04N2201/33357 , H04N2201/33378
摘要： The imaging system converts raw data for an image to formatted data concurrently with compressing the formatted data for the image. The exemplary imaging system includes an image processor for generating blocks of formatted data from raw image data. The exemplary imaging system also includes an image compressor for compressing the blocks of formatted data. The compressor compresses one or more of the blocks while the image processor generates one or more blocks of formatted data.
摘要翻译：成像系统通过压缩图像的格式化数据同时将图像的原始数据转换为格式化数据。示例性成像系统包括用于从原始图像数据生成格式化数据块的图像处理器。该示例性成像系统还包括用于压缩格式化数据块的图像压缩器。当图像处理器生成一个或多个格式化数据块时，压缩器压缩一个或多个块。

8. 发明授权

US09036069B2 Method and apparatus for unattended image capture 有权
标题翻译：用于无人值守图像捕获的方法和装置
公开(公告)号：US09036069B2
公开(公告)日：2015-05-19
申请号：US13612215
申请日：2012-09-12
申请人： Hung-Hsin Wu , Karthikeyan Shanmugavadivelu , Shizhong Liu , Wan Shun Vincent Ma , Adarsh Abhay Golikeri
发明人： Hung-Hsin Wu , Karthikeyan Shanmugavadivelu , Shizhong Liu , Wan Shun Vincent Ma , Adarsh Abhay Golikeri
IPC分类号： H04N5/222 , G06K9/00 , H04N5/232
CPC分类号： H04N5/23219 , G06T7/70 , G06T2207/10004 , G06T2207/30201 , H04N5/23222
摘要： Described is a method and apparatus for unattended image capture that can identify subjects or faces within an image captured with an image sensor. The methods and apparatus may then score the image based, at least in part, on scores of detected subjects or faces in the image, scores of facial expressions, a focus score, exposure score, stability score, or audio score. If the score of the image is above a threshold, a snapshot image may be stored to a data store on the imaging device. If the score of the image is below a threshold, one or more audible prompts may be generated indicating that subjects should change positions, smile or remain more still during the image capture process.
摘要翻译：描述了一种用于无人值守的图像捕捉的方法和装置，其可以识别用图像传感器捕获的图像内的对象或面部。方法和装置可以至少部分地基于图像中检测到的对象或面部的分数，面部表情的分数，焦点得分，曝光分数，稳定性分数或音频分数来评分图像。如果图像的分数高于阈值，则快照图像可以被存储到成像装置上的数据存储。如果图像的分数低于阈值，则可能产生一个或多个可听见的提示，指示受试者在图像捕获过程期间应该改变位置，微笑或保持更多。

9. 发明授权

US08396916B2 Fast DCT algorithm for DSP with VLIW architecture 有权
标题翻译：具有VLIW架构的DSP的快速DCT算法
公开(公告)号：US08396916B2
公开(公告)日：2013-03-12
申请号：US12787102
申请日：2010-05-25
申请人： Shizhong Liu
发明人： Shizhong Liu
IPC分类号： G06F17/14
CPC分类号： G06F17/147
摘要： A single stage computation method to perform a discrete cosine transform operation is provided. The discrete cosine transform operation is performed by executing a plurality of very large instruction words (VLIW) using a digital signal processor. The plurality of very large instruction words includes a first number of multiplications and a second number of additions, where the first number of multiplications is greater than the second number of additions.
摘要翻译：提供了执行离散余弦变换操作的单级计算方法。通过使用数字信号处理器执行多个非常大的指令字（VLIW）来执行离散余弦变换操作。多个非常大的指令字包括第一数量的乘法和第二数量的加法，其中第一数量的乘法大于第二数量的加法。

10. 发明授权

US08213498B2 Bitrate reduction techniques for image transcoding 有权
标题翻译：用于图像转码的比特率缩减技术
公开(公告)号：US08213498B2
公开(公告)日：2012-07-03
申请号：US11868211
申请日：2007-10-05
申请人： Shizhong Liu , Ricky Nguyen
发明人： Shizhong Liu , Ricky Nguyen
IPC分类号： H04N11/02
CPC分类号： H04N19/40 , H04N19/124 , H04N19/126 , H04N19/132 , H04N19/15 , H04N19/164 , H04N19/17 , H04N19/18 , H04N19/186 , H04N19/61
摘要： This disclosure describes techniques for encoding data to compress image data to a reduced size. The techniques may be particularly effective in transcoding an image to a reduced size for transmission. An encoding device may transcode an image to an acceptable file size using bitrate control techniques that affect the entire image uniformly to transcode the image. For example, the encoding device may modify one or more quantization tables as a function of the near linear relationship between bitrate (R) and the number of zero-valued quantized transform coefficients to reduce the file size uniformly over the entire image. Alternatively, or additionally, the encoding device may transcode the image using bitrate control techniques that affect only specific localized regions of the image.
摘要翻译：本公开描述了用于编码数据以将图像数据压缩到缩小尺寸的技术。这些技术可能特别有效地将图像转码为减小的尺寸以进行传输。编码设备可以使用影响整个图像的码率控制技术将图像转码为可接受的文件大小以对图像进行代码转换。例如，编码装置可以根据比特率（R）和零值量化变换系数的数量之间的近似线性关系来修改一个或多个量化表，以在整个图像上均匀地减小文件大小。或者或另外，编码设备可以使用仅影响图像的特定局部区域的比特率控制技术对图像进行代码转换。

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