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1.发明授权System and method for automatically processing image data to provide images of optimal perceptual quality 失效用于自动处理图像数据以提供最佳感知质量图像的系统和方法
公开(公告)号：US5694484A
公开(公告)日：1997-12-02
申请号：US440647
申请日：1995-05-15
CPC分类号： G06T5/003 , G06T5/002 , G06T2207/20052
摘要： An image processing system that automatically optimizes the perceptual quality of images undergoing a series of selected image-processing operations. The automatic optimization capability allows the system to bypass expensive and time-consuming trial-and-error methods associated with interactive methods. The system consists of a set of image-processing operations, an architecture, and an intelligent control. These elements take into consideration profiles of sources from which the images are generated, profiles of intended applications, and the impact that image processing operations (individually or in concert) will have on perceived image quality. The analysis uses a body of relationships linking human perception of image quality with objective metrics (such as sharpness, grain, tone, and color) of image content. The relationships used are based upon extensive psychovisual testing, using human observers and photographic images. The intelligent control embodies the test results and thereby functions as a synthetic human observer. Controlling a collection of adjustable parameters in the requested image-processing operations, it works automatically to maximize subjective quality for the resulting picture. When optimal parameter values have been determined, the system then subjects the image data, itself, to the corresponding processing operations and provides an image to the end application. This is all achieved without operator intervention other than initially selecting the set of processing operations. The functionality of the system may be implemented in a variety of physical architectures, including computer workstations, and including communicating sets of discrete components in which the computations and control are distributed among the components.
摘要翻译： 一种图像处理系统，其自动优化经历一系列选择的图像处理操作的图像的感知质量。 自动优化功能允许系统绕过与交互方法相关的昂贵且耗时的试错法。 该系统由一组图像处理操作，架构和智能控制组成。 这些元素考虑到生成图像的源的概况，预期应用的简档，以及图像处理操作（单独地或一致地）对感知图像质量的影响。 分析使用一种将人类对图像质量感知与图像内容的客观度量（如锐度，纹理，色调和颜色）相关联的关系。 所使用的关系是基于广泛的心理视觉测试，使用人类观察者和摄影图像。 智能控制体现了测试结果，从而发挥了人类合成观察者的作用。 在所请求的图像处理操作中控制可调整参数的集合，它可以自动工作，以最大限度地提高所得图像的主观质量。 当确定最佳参数值时，系统将图像数据本身对应于相应的处理操作，并向最终应用提供图像。 除了最初选择一组处理操作之外，这一切均不需要操作员的干预。 系统的功能可以在各种物理架构（包括计算机工作站）中实现，并且包括其中计算和控制在组件之间分布的离散组件的通信集合。
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2.发明授权System and method for automatically optimizing image quality and processing time 失效自动优化图像质量和处理时间的系统和方法
公开(公告)号：US5835627A
公开(公告)日：1998-11-10
申请号：US859665
申请日：1997-05-20
CPC分类号： G06T5/003 , G06T5/002 , G06T2207/20052
摘要： An image processing system and method for processing an input image provides a virtual observer for automatically selecting, ordering and implementing a sequence of image processing operations which will yield maximum customer satisfaction as measured by a customer satisfaction index (CSI) which, for example, can balance the image quality and the processing time. The CSI evaluates an effect of the sequence of image processing operations on the input image in response to upstream device characteristic data received from an input device profile, downstream device characteristic data received from an output device profile, host configuration data, user selection data, trial parameter values and data corresponding to the sequence of image processing operations. In a preferred embodiment, the effect is evaluated in accordance with predetermined psychovisual attributes of the input image as attained and codified by human observers who have subjectively selected a most pleasing test image corresponding to objective metrics of the predetermined psychovisual attributes.
摘要翻译： 用于处理输入图像的图像处理系统和方法提供了一种虚拟观察者，用于自动选择，排序和实现图像处理操作的序列，其将通过客户满意度指数（CSI）测量得到最大的客户满意度，客户满意度指数（CSI）例如可以 平衡图像质量和处理时间。 响应于从输入设备配置文件接收到的上游设备特征数据，从输出设备配置文件接收的下游设备特性数据，主机配置数据，用户选择数据，试验，CSI评估图像处理操作序列对输入图像的影响 参数值和对应于图像处理操作序列的数据。 在优选实施例中，根据由主观地选择与预定心理属性的客观度量相对应的最令人愉悦的测试图像的人类观察者获得并编码的输入图像的预定心理属性来评估效果。
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公开(公告)号：US6128415A
公开(公告)日：2000-10-03
申请号：US709487
申请日：1996-09-06
CPC分类号： G06T1/00
摘要： Device profiles conventionally describe properties of a device or element within a digital image processing system that capture, transform or render color components of an image. An improved device profile includes both chromatic characteristic information and spatial characteristic information. The device profile is generated by use of both chromatic and spatial characteristic functions within a model based image processing system to predict both color and spatial characteristics of a processed image. The device profile generally includes: first data for describing a device dependent transformation of color information content of the image; and second data for describing a device dependent transformation of spatial information content of the image. In a special case, the device profile could contain only spatial characteristic information.
摘要翻译： 设备配置文件通常描述数字图像处理系统内捕获，变换或渲染图像的颜色分量的设备或元件的属性。 改进的设备简档包括彩色特征信息和空间特征信息。 通过在基于模型的图像处理系统内使用色彩和空间特征函数来生成设备简档，以预测处理的图像的颜色和空间特性。 设备简档通常包括：用于描述图像的颜色信息内容的设备相关变换的第一数据; 以及用于描述图像的空间信息内容的设备相关变换的第二数据。 在特殊情况下，设备配置文件只能包含空间特征信息。
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公开(公告)号：US6008907A
公开(公告)日：1999-12-28
申请号：US950580
申请日：1997-10-15
CPC分类号： H04N1/6033
摘要： A system and method for calibrating a printer includes the steps or functions of: printing a predetermined color test pattern with the printer by transforming data, representing said predetermined color test pattern, from a device-independent color space to a device-dependent color space associated with the printer by use of a color transform, said predetermined color test pattern including a set of color patches with one of said color patches representing a preferred mid-gray hue; providing a predetermined reference gray surface; comparing said reference gray surface to said set of colored patches of the printed test pattern to find a closest matching one of said patches, if the closest matching one of said patches is the patch representing the preferred mid-gray hue, then ending the method; otherwise determining, for each color channel of the printer, a solution set of correction values as a function of believed gray versus actual gray, said solution set derived from and including a white point, a black point and a point mapped at {G.sub.b, G.sub.a } where G.sub.b is the believed gray value of the closest matching one of said patches and G.sub.a is the actual gray value of the closest matching one of said patches; and adding to the color transform the corresponding solution set for each color channel of the printer.
摘要翻译： 用于校准打印机的系统和方法包括以下步骤或功能：通过将表示所述预定颜色测试图案的数据从与设备无关的色彩空间转换为相关联的与设备有关的颜色空间来打印预定颜色测试图案 与所述打印机通过使用颜色变换，所述预定颜色测试图案包括一组色块，其中一个所述色标表示优选的中间灰色色调; 提供预定的参考灰度表面; 将所述参考灰度表面与所述印刷测试图案的所述彩色贴片组进行比较，以找到所述贴片中最接近的一个所述贴片，如果所述贴片中最接近的一个贴片是表示优选中间灰色色调的贴片，则结束该方法; 否则，对于打印机的每个颜色通道，确定作为相信灰色与实际灰色的函数的校正值的解集合，所述解决方案集源自并包括白点，黑点和映射在{Gb，Ga 其中Gb是所述贴片中最接近匹配的一个的相信灰度值，Ga是所述贴片中最接近匹配的一个的实际灰度值; 并添加到打印机的每个颜色通道的颜色变换相应的解决方案集。
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5.发明授权System and method for color gamut and tone compression using an ideal mapping function 失效使用理想的映射函数进行色域和色调压缩的系统和方法
公开(公告)号：US5809164A
公开(公告)日：1998-09-15
申请号：US612123
申请日：1996-03-07
CPC分类号： H04N1/6058
摘要： A color management system including methods relying on an "Ideal Film Model" color mapping function characterized by exact colorimetric detection of world color information, a nonlinear tone compression acting on the tristimulus values X/Xn, Y/Yn, Z/Zn, and an exact calorimetric display of the compressed tristimulus values. The system and method operate to provide a process for describing the necessary tone reproduction required in displaying optimal reproductions of complex world pictorial scenes over a plurality of elements in an image processing system and to provide a reference system for evaluating the color and tone reproduction of real imaging systems; provide a well defined calibration protocol for the calibration of electronic and hybrid imaging systems designed to capture complex world scenes; and provide a useful model for simulating some sensitometric attributes of real photographic systems.
摘要翻译： 一种颜色管理系统，其包括依赖于“理想电影模型”颜色映射功能的方法，其特征在于对世界色彩信息进行精确的比色检测，对三色刺激值X / Xn，Y / Yn，Z / Zn和 精确的量热显示压缩三刺激值。 该系统和方法操作以提供一种用于描述在图像处理系统中的多个元素上显示复杂世界绘画场景的最佳复制所需的必要色调再现的过程，并提供用于评估真实色彩和色调再现的参考系统 成像系统; 为设计用于捕获复杂世界场景的电子和混合成像系统的校准提供了明确的校准协议; 并提供一个有用的模型，用于模拟真实摄影系统的一些感光度属性。
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