公开(公告)号：US06724422B1

公开(公告)日：2004-04-20

申请号：US09646052

申请日：2000-10-25

申请人： Winfried Werner

发明人： Winfried Werner

IPC分类号： H04N1700

CPC分类号： H04N1/6083 ,  H04N1/603 ,  H04N1/6077

摘要： In a method for automatically selecting color calibrations for digital color image recording, especially for digital photography or digital video recording in any lighting conditions, at least one color calibration is produced and stored by recording a calibrated color table. The color calibration which best resembles the color cast of a color image is selected on the basis of the correlation between the color cast parameters of the color image which is being recorded and the respective color calibration. In the event that no matching color calibration is found by comparing the color cast parameters, a standard color calibration is selected.

摘要翻译： 在用于自动选择用于数字彩色图像记录的颜色校准的方法中，特别是在任何照明条件下进行数字摄影或数字视频记录的方法中，通过记录校准的色表来产生和存储至少一种颜色校准。 基于正在记录的彩色图像的色彩转换参数与各自的颜色校准之间的相关性来选择最佳类似于彩色图像的色调的颜色校准。 如果通过比较色差参数找不到匹配的颜色校准，则选择标准颜色校准。

公开(公告)号：US06686953B1

公开(公告)日：2004-02-03

申请号：US09797897

申请日：2001-03-01

申请人： Joseph Holmes

发明人： Joseph Holmes

IPC分类号： H04N1700

CPC分类号： H04N1/6033 ,  H04N17/02 ,  H04N17/04

摘要： A novel process of visual calibration of a computer display or the like in volves adjusting the appearance and relative appearance of targets and su targets displayed on the display. An objective method is provided for determining the precisely optimal brightness setting for CRT displays, which method is also applicable to the setting of the “Black Level” control on some FPDs. A precise method is provided to visually determine conformity of a display's tonality to a given standard tone curve, for example a gamma 1.8 curve, which is embodied in one of the preferred calibration target sets. The need to sense and therefore be able to control and to verify the correct gray balance of the entire tone scale of the display is met. The problem of verifying the similarity of the tone curve in the display profile and that of the actual calibration is solved. By converting a preferred RGB gamma target into CIE Lab image data through an ideal display profile of the correct gamma, a new kind of target is taught.

摘要翻译： 在调节显示在显示器上的目标和su目标的外观和相对外观的volves中的计算机显示器等的视觉校准的新颖过程。 提供了一种用于确定CRT显示器的精确最佳亮度设置的客观方法，该方法也适用于在一些FPD上设置“黑电平”控制。 提供了一种精确的方法来可视地确定显示器的音调与给定的标准色调曲线的一致性，例如伽马1.8曲线，其体现在优选的校准目标组之一中。 满足感觉并因此能够控制和验证显示器的整个色阶的正确灰度平衡的需要。 解决了显示轮廓中的色调曲线与实际校准的相似性的验证问题。 通过将优选的RGB伽马射线通过正确伽马的理想显示轮廓转换为CIE Lab图像数据，教导了一种新的目标。

公开(公告)号：US06545707B1

公开(公告)日：2003-04-08

申请号：US09595914

申请日：2000-06-20

申请人： Russell Newcomb ,  Timothy Hu

发明人： Russell Newcomb ,  Timothy Hu

IPC分类号： H04N1700

CPC分类号： H04N17/00 ,  H04N5/16 ,  H04N7/102

摘要： In a video system in which a video signal source transmits a video signal to a receiver over a transmission line, a method of maintaining a desired voltage level from the video signal source includes the steps of monitoring the level of voltage at the output of the video signal source, and adjusting an input to the video signal source as necessary in order to maintain a desired level of voltage. Thus, when the impedance of the transmission line and receiver change, the output voltage from the video signal source is maintained at a desired level without clipping of the signal when the video signal source is overdriven.

摘要翻译： 在视频信号源通过传输线将视频信号发送到接收机的视频系统中，从视频信号源维持所需电压电平的方法包括以下步骤：监视视频输出端的电压电平 信号源，并且根据需要调整到视频信号源的输入，以便保持期望的电压电平。 因此，当传输线和接收器的阻抗改变时，视频信号源的输出电压在视频信号源被过载时保持在期望的水平，而不会削波信号。

公开(公告)号：US06493023B1

公开(公告)日：2002-12-10

申请号：US09266962

申请日：1999-03-12

申请人： Andrew B. Watson

发明人： Andrew B. Watson

IPC分类号： H04N1700

CPC分类号： H04N17/004 ,  H04N17/00 ,  H04N17/02

摘要： A Digital Video Quality (DVQ) apparatus and method that incorporate a model of human visual sensitivity to predict the visibility of artifacts. The DVQ method and apparatus are used for the evaluation of the visual quality of processed digital video sequences and for adaptively controlling the bit rate of the processed digital video sequences without compromising the visual quality. The DVQ apparatus minimizes the required amount of memory and computation. The input to the DVQ apparatus is a pair of color image sequences: an original (R) non-compressed sequence, and a processed (T) sequence. Both sequences (R) and (T) are sampled, cropped, and subjected to color transformations. The sequences are then subjected to blocking and discrete cosine transformation, and the results are transformed to local contrast. The next step is a time filtering operation which implements the human sensitivity to different time frequencies. The results are converted to threshold units by dividing each discrete cosine transform coefficient by its respective visual threshold. At the next stage the two sequences are subtracted to produce an error sequence. The error sequence is subjected to a contrast masking operation, which also depends upon the reference sequence (R). The masked errors can be pooled in various ways to illustrate the perceptual error over various dimensions, and the pooled error can be converted to a visual quality measure.

摘要翻译： 数字视频质量（DVQ）装置和方法，其包含人类视觉灵敏度的模型以预测人造物的可视性。 DVQ方法和装置用于评估经处理的数字视频序列的视觉质量，并用于自适应地控制处理的数字视频序列的比特率，而不损害视觉质量。 DVQ设备使所需的内存量和计算量最小化。 DVQ设备的输入是一对彩色图像序列：原始（R）非压缩序列和处理（T）序列。 序列（R）和（T）都被采样，裁剪并进行颜色变换。 然后对序列进行阻塞和离散余弦变换，并将结果转换为局部对比度。 下一步是对不同时间频率实现人体灵敏度的时间滤波操作。 通过将每个离散余弦变换系数除以其各自的视觉阈值，将结果转换为阈值单位。 在下一阶段，减去两个序列以产生错误序列。 对错误序列进行对比度掩蔽操作，这也取决于参考序列（R）。 掩蔽的错误可以以各种方式汇总以说明各种维度的感知错误，并且汇集的错误可以转换为视觉质量度量。

公开(公告)号：US06433819B1

公开(公告)日：2002-08-13

申请号：US09457411

申请日：1999-12-07

申请人： Bei Li ,  Bozidar Janko

发明人： Bei Li ,  Bozidar Janko

IPC分类号： H04N1700

CPC分类号： H04N17/00

摘要： A method and apparatus for the detection of Gaussian noise in a video signal decomposes an image from the video signal to obtain best qualified blocks having a relatively uniform luminance. From the best qualified blocks an average standard deviation is calculated, and then smoothed by temporal filtering. The filtered average standard deviation is finally calibrated against a scale of corresponding input noise levels to obtain the Gaussian noise in the video signal.

摘要翻译： 用于检测视频信号中的高斯噪声的方法和装置从视频信号中分解图像以获得具有相对均匀亮度的最佳合格块。 从最合格的块中计算平均标准偏差，然后通过时间滤波平滑。 滤波的平均标准偏差最终根据相应的输入噪声电平的比例校准，以获得视频信号中的高斯噪声。

公开(公告)号：US06369852B1

公开(公告)日：2002-04-09

申请号：US09405697

申请日：1999-09-24

申请人： Yoshizou Honda

发明人： Yoshizou Honda

IPC分类号： H04N1700

CPC分类号： H04N17/004

摘要： An analytical system for moving picture regeneration is capable of ascertaining an appropriate method of improving the quality of a moving picture by executing satisfactory analysis of the state of moving picture regeneration. With the analytical system for moving picture regeneration, moving picture codes are decoded and regenerated by respective regeneration units. Thereupon, in each of the regeneration units, occurrence of picture freeze is detected by information subunits for picture freeze occurrence, a throughput is detected by throughput monitoring subunits, and delay in input time of the respective moving picture codes is detected by input-time information subunits and sent out to a display unit. Further, a SNR value is computed on the basis of a restored moving picture and a reference moving picture by respective SNR computation units, and a sum of the throughputs of the respective regeneration units is obtained by a total throughput monitoring unit, and sent out to the display unit. As a result, the state of the occurrence of the picture freeze and the SNR, for respective pictures, are detected and displayed concurrently, and also fluctuations in the input delay time and the throughputs for decoding are detected and displayed. Furthermore, a total throughput of constituent units having processing resources in common is detected and displayed.

摘要翻译： 用于运动图像再生的分析系统能够通过对运动图像再生的状态进行满意的分析来确定提高运动图像的质量的适当方法。 利用用于运动图像再生的分析系统，运动图像代码被各个再生单元解码和再生。 因此，在每个再生单元中，图像冻结发生的信息子单元检测到图像冻结的发生，通过吞吐量监视子单元检测吞吐量，并且通过输入时间信息检测各运动图像代码的输入时间的延迟 子单元并发送到显示单元。 此外，基于通过各个SNR计算单元的恢复的运动图像和参考运动图像来计算SNR值，并且通过总吞吐量监视单元获得各个再生单元的吞吐量之和，并发送到 显示单元。 结果，同时检测和显示各图像的图像冻结和SNR的发生状态，并且还检测和显示输入延迟时间和解码的吞吐量的波动。 此外，检测并显示具有共同的处理资源的构成单元的总吞吐量。

公开(公告)号：US06333768B1

公开(公告)日：2001-12-25

申请号：US09028838

申请日：1998-02-24

申请人： Toshiyuki Kawashima ,  Toshiyuki Saigo

发明人： Toshiyuki Kawashima ,  Toshiyuki Saigo

IPC分类号： H04N1700

CPC分类号： H04N9/31 ,  H04N9/28 ,  H04N17/045

摘要： A television system performs beam convergence in video displays. The system is implemented through one or more convergence sensors, which are exposed to two distinct convergence test patterns. The output signals from the sensors when exposed to the two convergence test patterns are used in beam convergence calculations. The convergence test patterns are selected to reduce the dynamic range requirement for an A/D converter in the television system supplied with the sensor output signals.

摘要翻译： 电视系统在视频显示器中执行光束会聚。 该系统通过一个或多个会聚传感器实现，它们暴露于两个不同的收敛测试模式。 当暴露于两个收敛测试模式时，来自传感器的输出信号用于波束收敛计算。 选择会聚测试模式以减少提供有传感器输出信号的电视系统中A / D转换器的动态范围要求。

公开(公告)号：US06323828B1

公开(公告)日：2001-11-27

申请号：US09274917

申请日：1999-03-23

申请人： Raphaêl Perez

发明人： Raphaêl Perez

IPC分类号： H04N1700

CPC分类号： G09G5/006 ,  G09G3/006 ,  G09G2370/047 ,  H04N17/04

摘要： A system is described for testing the video output of a computer of the type in which a video output connector is provided with a data channel, such as a DDC channel, permitting data to be transmitted from a monitor connected to the video output connector to the computer. The system comprises test apparatus having a connector for connection to the video output connector of a computer under test, the test apparatus comprising means to measure parameters of test video signals received through the connector and means to generate a result signal from the measured parameters for transmission to the computer under test over the data channel. Software executing on the computer under test to generate the test video signals and to receive and process the result signal received over the data channel.

摘要翻译： 描述了一种用于测试其中视频输出连接器被提供有诸如DDC通道的数据通道的类型的计算机的视频输出的系统，允许数据从连接到视频输出连接器的监视器发送到 电脑。 该系统包括具有用于连接到被测计算机的视频输出连接器的连接器的测试装置，该测试装置包括用于测量通过连接器接收的测试视频信号的参数的装置，以及用于根据测量的参数生成结果信号以传输 通过数据通道到被测电脑。 在被测计算机上执行的软件产生测试视频信号，并接收并处理通过数据通道接收的结果信号。

公开(公告)号：US06295083B1

公开(公告)日：2001-09-25

申请号：US09032640

申请日：1998-02-27

申请人： Alexander Kuhn

发明人： Alexander Kuhn

IPC分类号： H04N1700

CPC分类号： H04N17/004 ,  G06T7/0002 ,  G06T7/32 ,  G06T2207/20016 ,  G06T2207/30168

摘要： High precision image alignment detection uses an iterative part pixel shift detection algorithm to accurately determine the displacement of a received image with respect to a reference image. An alignment pattern is inserted into the original image and a portion of the alignment pattern, such as a single line, also is stored as a reference image. Using cross-correlation the received image is compared with the reference image to locate the alignment pattern, and selected portions of the received image alignment pattern are then used in conjunction with the reference image to determine the total pixel shift of the received image. An integer pixel shift is determined by cross-correlation of the received alignment pattern with the reference image. Using the integer pixel shift to identify a starting point, data is extracted from the received alignment pattern about a specific feature and a part pixel shift is measured. The received alignment pattern is then shifted by the part pixel shift, the data is again extracted and an additional part pixel shift is measured. These steps are iterated, using the sum of all prior part pixel shifts for each subsequent shift. At completion the total of the integer pixel shift value and all the part pixel shift values determines the pixel shift required for registration of the received image vis a vis the original image.

摘要翻译： 高精度图像对准检测使用迭代部分像素移位检测算法来精确地确定接收图像相对于参考图像的位移。 将对准图案插入到原始图像中，并且诸如单行的对准图案的一部分也被存储为参考图像。 使用互相关将接收的图像与参考图像进行比较以定位对准图案，然后将接收到的图像对准图案的选定部分与参考图像一起使用以确定接收图像的总像素移位。 整数像素移位通过接收到的对准图案与参考图像的互相关来确定。 使用整数像素偏移来识别出发点，从接收到的对准图案中提取关于特定特征的数据，并测量部分像素偏移。 然后将接收到的对准图案移位部分像素移位，再次提取数据，并测量附加部分像素移位。 这些步骤被迭代，使用每个后续移位的所有先前部分像素移位的总和。 在完成时，整数像素偏移值和所有部分像素偏移值的总和确定了接收到的图像相对于原始图像的注册所需的像素移位。

公开(公告)号：US06271879B1

公开(公告)日：2001-08-07

申请号：US09055074

申请日：1998-04-03

申请人： Michael S. Overton

发明人： Michael S. Overton

IPC分类号： H04N1700

CPC分类号： H04N17/02

摘要： An apparatus and method for controlling and detecting the alignment of a color frame phase from a composite analog video signal decodes the composite analog video signal to produce a component digital video signal and to generate a color frame signal that represents the start of each color frame for the composite analog video signal. Based upon the color frame signal a flag signal is inserted into the component digital video signal. The component digital video signal is captured by an analyzer based upon the flag signal so that the captured component digital video signal is in color frame phase with a stored reference component digital video signal. Preferably the stored reference component digital video signal represents a test sequence having an integer number of color frames plus or minus one video frame.

摘要翻译： 一种用于控制和检测来自复合模拟视频信号的彩色帧相位对准的装置和方法，对复合模拟视频信号进行解码以产生分量数字视频信号，并产生一个颜色帧信号，该彩色帧信号表示每个色彩帧的开始， 复合模拟视频信号。 基于彩色帧信号，将标志信号插入到分量数字视频信号中。 分量数字视频信号由分析器基于标志信号捕获，使得所捕获的分量数字视频信号与存储的参考分量数字视频信号处于彩色相位相位。 优选地，存储的参考分量数字视频信号表示具有整数个彩色帧加或减一个视频帧的测试序列。