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11. 发明授权

US06219456B1 Picture coding apparatus and method thereof 有权
公开(公告)号：US06219456B1
公开(公告)日：2001-04-17
申请号：US09315100
申请日：1999-05-19
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
IPC分类号： G06K936
CPC分类号： H04N19/186 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/63 , H04N19/647 , H04N19/96
摘要： In a picture coding apparatus and a picture coding method, when a picture data is hierarchically coded, compression efficiency can be improved, and the deterioration of picture quality can be reduced. When a picture data is hierarchically coded by utilizing a recursive hierarchical representation, adaptive division of block is performed corresponding to the characteristic of the picture data and then coding is performed, and thus obtained hierarchical coded data is transmitted, so that the block of the lower hierarchy can be adaptively divided, thereby the information quantity such as a plane portion of picture can be reduced.

12. 发明授权

US5444487A Adaptive dynamic range encoding method and apparatus 失效
标题翻译：自适应动态范围编码方法和装置
公开(公告)号：US5444487A
公开(公告)日：1995-08-22
申请号：US162273
申请日：1993-12-07
申请人： Tetsujiro Kondo , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Kunio Kawaguchi
IPC分类号： H03M7/50 , G06T9/00 , H04N1/41 , H04N1/415 , H04N19/00 , H04N19/124 , H04N19/134 , H04N19/136 , H04N19/154 , H04N19/176 , H04N19/186 , H04N19/192 , H04N19/196 , H04N19/423 , H04N19/85 , H04N19/98 , H04N7/40
CPC分类号： H04N19/98
摘要： An adaptive dynamic range encoding method and device in which evaluation data mainly centered about the amount of the change in the spatial direction of picture data in a block is detected, and re-quantization is performed which will give a minimum value of the evaluation data. The re-quantization is performed at an optimum quantization step conforming to the picture in the block in such a manner that picture portions having the same level may remain at the same level after re-quantization. This renders it possible to eliminate quantization distortions from being produced in the reproduced picture.
摘要翻译：检测以块为单位的以图像数据的空间方向的变化量为中心的评价数据的自适应动态范围编码方法和装置，并且执行将给出评价数据的最小值的重新量化。以符合块中的图像的最佳量化步骤，以相同电平的图像部分在重新量化后可以保持在相同电平的方式执行重新量化。这使得可以消除在再现的图像中产生的量化失真。

13. 发明授权

US06539119B1 Picture coding apparatus and method thereof 失效
公开(公告)号：US06539119B1
公开(公告)日：2003-03-25
申请号：US09710542
申请日：2000-11-09
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
IPC分类号： G06K936
CPC分类号： H04N19/186 , H04N19/10 , H04N19/115 , H04N19/146 , H04N19/63 , H04N19/647 , H04N19/96
摘要： In a picture coding apparatus and a picture coding method, when a picture data is hierarchically coded, compression efficiency can be improved, and the deterioration of picture quality can be reduced. When a picture data is hierarchically coded by utilizing a recursive hierarchical representation, adaptive division of block is performed corresponding to the characteristic of the picture data and then coding is performed, and thus obtained hierarchical coded data is transmitted, so that the block of the lower hierarchy can be adaptively divided, thereby the information quantity such as a plane portion of picture can be reduced.

14. 发明授权

US06285714B1 Image signal interpolating apparatus 失效
标题翻译：图像信号内插装置
公开(公告)号：US06285714B1
公开(公告)日：2001-09-04
申请号：US08562429
申请日：1995-11-24
申请人： Kunio Kawaguchi , Tetsujiro Kondo
发明人： Kunio Kawaguchi , Tetsujiro Kondo
IPC分类号： H04N718
CPC分类号： H04N19/98 , H04N19/587 , H04N19/593
摘要： An image signal interpolation apparatus converts an image signal having a first resolution into a second image signal having a second resolution that is greater than the first resolution. A characteristic, e.g., a degree of flatness, of an area in the image signal surrounding a picture element to be interpolated is detected, and various picture elements surrounding the picture element to be interpolated are selected based on the amount of the characteristic, e.g., the degree of flateness. A class of the picture element to be interpolated is generated using the values of the selected picture elements, predicted data are generated from the determined class and a reference image signal having the greater resolution, and the picture element to be interpolated is produced from the predicted data.
摘要翻译：图像信号插值装置将具有第一分辨率的图像信号转换为具有大于第一分辨率的第二分辨率的第二图像信号。检测周边要被内插的像素的图像信号中的区域的特性，例如平坦度，并且基于特征量来选择围绕要内插的像素的各种图像元素，例如，平整度。使用所选择的图像元素的值生成待内插的图像元素的类别，从所确定的类别生成预测数据，并且生成具有更高分辨率的参考图像信号，并且从预测的图像元素生成待内插的图像元素数据。

15. 发明授权

US6016164A Image signal interpolating apparatus 有权
标题翻译：图像信号内插装置
公开(公告)号：US6016164A
公开(公告)日：2000-01-18
申请号：US200249
申请日：1998-11-25
申请人： Kunio Kawaguchi , Tetsujiro Kondo
发明人： Kunio Kawaguchi , Tetsujiro Kondo
IPC分类号： H04N19/50 , G06T1/00 , H03M7/36 , H04N1/41 , H04N19/105 , H04N19/119 , H04N19/12 , H04N19/126 , H04N19/132 , H04N19/136 , H04N19/14 , H04N19/189 , H04N19/19 , H04N19/192 , H04N19/196 , H04N19/42 , H04N19/423 , H04N19/59 , H04N19/61 , H04N19/625 , H04N19/63 , H04N19/85 , H04N19/98 , H04N7/18
CPC分类号： H04N19/98 , H04N19/587 , H04N19/593
摘要： An image signal interpolating apparatus with a simple structure which generates an interpolation picture element value near the real value without aliasing noise is realized. Predictive coefficients D8 which correspond to the class are read-out, and interpolation data D2 are obtained based on the predictive coefficients D8, thereby, interpolation data D2 near the real value are obtained without aliasing noise. In addition, the flatness near an interpolation-addressed picture element is detected and picture elements used for classification are selected depending on the resultant detected flatness D4, thereby, the interpolation-addressed picture element is classified correctly with the least number of class. Thus the structure can be simplified.
摘要翻译：实现了具有简单结构的图像信号内插装置，其生成靠近实数值而没有混叠噪声的内插像素值。读出对应于类别的预测系数D8，并且基于预测系数D8获得插值数据D2，从而获得实际值附近的插值数据D2而不产生混叠噪声。此外，根据所得到的检测平坦度D4，检测内插寻址像素附近的平坦度，并根据合成检测平面度D4来选择用于分类的图像元素，从而以最少数目的类别正确分类内插寻址图像元素。因此，可以简化结构。

16. 发明授权

US5956089A Picture encoding apparatus, picture encoding method, picture encoding and transmitting method, and picture record medium 失效
公开(公告)号：US5956089A
公开(公告)日：1999-09-21
申请号：US879485
申请日：1997-06-19
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
IPC分类号： H04N5/85 , H04N5/926 , H04N7/26 , H04N7/32
CPC分类号： H04N19/98 , H04N5/9261 , H04N5/85 , H04N5/9264
摘要： On a decoding side, parameters (minimum value MIN and dynamic range DR) are optimized in such a manner that a decoded error of original signal values and restored values becomes minimum. A maximum value detecting portion 2 detects the maximum value MAX of pixels of each block composed of (3.times.3) pixels. Likewise, a minimum value detecting portion 3 detects the minimum value MIN. A subtracting portion 4 generates a dynamic range DR. A subtracting portion 5 subtracts MIN from each of input pixel values y and generates normalized values. A step width calculating portion 6 calculates a quantizing step width .DELTA. with DR. A quantizing portion 7 generates quantized values x (each of which is composed of 4 bits) with .DELTA.. A least squares method based estimating portion 8 generates decoded values y' with y and x and obtains an optimized dynamic range DR' and an optimized minimum value MIN' in such a manner that the sum of square of an error (y'-y) becomes minimum. A framing portion 11 frames x, DR', and MIN' and records the framed data on a record medium 15 through an error-correction-code adding portion 12, a modulating portion 13, and a recording portion 14.

17. 发明授权

US5781238A Information signal encoding apparatus, encoding method thereof, information signal decoding method, and information signal record medium thereof 失效
标题翻译：信息信号编码装置，其编码方法，信息信号解码方法及其信息信号记录介质
公开(公告)号：US5781238A
公开(公告)日：1998-07-14
申请号：US687085
申请日：1996-07-23
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kenji Takahashi , Kunio Kawaguchi
IPC分类号： G06T9/00 , H04N7/26 , H04N7/32
CPC分类号： H04N19/98
摘要： Difference signals generated in the prediction encoding process for an input digital information signal are block segmented. The maximum value and minimum value of each block are detected. In addition, a quantizing step .DELTA. is calculated. An offset detecting circuit detects a zero position flag ZR and an offset off. The zero position flag ZR represents a quantized code that includes 0. The offset off represents the deviation between value 0 of difference signals and value 0 of restored representative values. A class category adaptive predicting circuit predicts ZR and .DELTA.. These values are not transmitted in other than exception process. With predicted values ZR and .DELTA., difference signals corrected with the offset off are quantized by a quantizing circuit.
摘要翻译：在输入数字信息信号的预测编码处理中产生的差分信号被块分割。检测每个块的最大值和最小值。另外，计算量化步骤DELTA。偏移检测电路检测零位置标记ZR和偏移量。零位标志ZR表示包含0的量化码。offset off表示差分信号的值0与恢复的代表值的值0之间的偏差。类别自适应预测电路预测ZR和DELTA。除了异常处理之外，这些值不会传输。利用预测值ZR和DELTA，通过量化电路量化用偏移关闭校正的差分信号。

18. 发明授权

US5666164A Image signal converting apparatus 失效
标题翻译：图像信号转换装置
公开(公告)号：US5666164A
公开(公告)日：1997-09-09
申请号：US284560
申请日：1994-10-24
申请人： Tetsujiro Kondo , Masashi Uchida , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Masashi Uchida , Kunio Kawaguchi
IPC分类号： H04N7/01 , H04N7/12 , H04N7/26 , H04N11/20
CPC分类号： H04N7/0135 , H04N19/98 , H04N7/0125 , H04N7/125
摘要： An input digital image signal (SD signal) is converted into a high resolution digital video signal (HD signal). A considered pixel is categorized as a class corresponding to a one-dimensional, two-dimensional, or three-dimensional level distribution of a plurality of reference pixels of the SD signal. A predicted value of the considered pixel is generated by linear combination of values of a plurality of pixels of the SD signal adjacent to the considered pixel of the HD signal and predicted coefficients that have been learnt. In the learning process, predicted coefficients are determined by linear combination of the values of pixels of the SD signal and the predicted coefficients so that the sum of squares of the predicted value and the true value is minimized. Instead of the predicted coefficients, representative values may be determined for each class. In this case, the representative values are used as predicted values corresponding to the class of the input SD signal. Examples of the representative values are a base value of a block and a value normalized by dynamic range DR.
摘要翻译： PCT No.PCT / JP93 / 01786 Sec。 371日期：1994年10月24日 102（e）日期1994年10月24日PCT 1993年12月9日PCT公布。出版物WO94 / 14278 日期1994年6月23日输入数字图像信号（SD信号）被转换为高分辨率数字视频信号（HD信号）。所考虑的像素被分类为与SD信号的多个参考像素的一维，二维或三维水平分布相对应的类。所考虑的像素的预测值通过与所考虑的HD信号的像素相邻的SD信号的多个像素的值和已经学习的预测系数的值的线性组合来生成。在学习过程中，通过SD信号的像素值和预测系数的线性组合来确定预测系数，使得预测值和真实值之间的平方和最小化。代替预测的系数，可以为每个类别确定代表值。在这种情况下，代表值被用作对应于输入SD信号的类别的预测值。代表值的示例是块的基值和由动态范围DR归一化的值。

19. 发明授权

US06864997B2 Picture encoding apparatus and method 失效
标题翻译：图像编码装置及方法
公开(公告)号：US06864997B2
公开(公告)日：2005-03-08
申请号：US10005029
申请日：2001-12-03
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
IPC分类号： G06T9/00 , H04N7/26 , H04N1/41
CPC分类号： H04N19/98 , H04N19/115 , H04N19/146 , H04N19/61 , H04N19/63
摘要： A picture encoding apparatus and the method in which the quantization step width of the lower hierarchy data having a resolution higher than that of the upper hierarchy data is determined for each predetermined block of respective hierarchy data based on the quantization step width determined by the upper hierarchy data having a low resolution, so that the additional code indicating the characteristics of quantizer can be omitted thereby the compression efficiency can be improved and the deterioration of picture quality can be reduced when picture data is hierarchical-encoded.
摘要翻译：基于由上层确定的量化步长，针对各层次数据的每个预定块确定图像编码装置和方法，其中分辨率高于上层数据的下层数据的量化步长具有低分辨率的数据，使得可以省略指示量化器的特性的附加代码，从而可以提高压缩效率，并且当图像数据被分层编码时可以降低图像质量的劣化。

20. 发明授权

US06320910B2 Apparatus for hierarchical encoding of digital image signals with improved encoding efficiency 失效
公开(公告)号：US06320910B2
公开(公告)日：2001-11-20
申请号：US09501740
申请日：2000-02-11
申请人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
发明人： Tetsujiro Kondo , Yasuhiro Fujimori , Kunio Kawaguchi
IPC分类号： H04N712
CPC分类号： H04N19/98 , H04N19/63
摘要： An input digital video signal is encoded to produce at least first and second hierarchical data signals which respectively represent a first video signal and a lower resolution video signal. Each pixel data signal of the second hierarchical data signal is calculated as an average of N pixel data signals of the input digital video signal. The second hierarchical data signal is output together with first hierarchical pixel data signals representing only N−1 of the N pixel data signals of the input digital video signal. The first hierarchical pixel data signals may be differential signals produced by subtracting each of the N−1 pixel data signals from the average value of the N pixel data signals. During decoding the Nth pixel data signal is reconstructed from the N−1 pixel data signals and the average value provided as the corresponding second hierarchical pixel signal.

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