摘要:
A method and apparatus for interactively and automatically enhancing image data by modifying one or more features of an image. The method includes inputting image data representing an image to be modified, analyzing the image for features to be modified, automatically selecting one or more feature to be modified, determining a first degree of modification using a automatic image enhancement techniques or a stored user preference, reversibly modifying the image based on the selected image feature and the first degree of modification, showing the image before improvement, showing the image after improvement and allowing the user to further modify at least one feature of the image data.
摘要:
A method for varying the color of an image including lines and background. Where the image includes the colors black and white and a plurality of gray pixels, where gray refers to the presence of pixel values between the maximum and minimum pixel values, inclusive, the image is first converted to a color space, such as for example, r, g, b (red-green-blue). Pixel values are thresholded for differentiation between lines and background. When pixels have a value indicating that the pixel is background, that pixel is set to a background color that has been previously selected. Otherwise, that pixel is set to a foreground color. The result is that background is set to a single color, and lines are set to a second color. Alternatively, where intermediate values are present, the foreground color value may be added to the intermediate level color value to produce a gradually varying colored line.
摘要:
Image appearance characteristics for a display may be defined by two data sets, a first standard data set for the image, and a second set for the area to be dodged, where the dodged area is separated from the remainder of the image by a series of edges. The appearance of any particular pixel in the original is determined by the first bit, or control plane, of the image data, the state of which indicates that pixel appearance is determined by one of the first or second data sets. To soften the transition of the image from one data set to another data set, at the dodged area edges, a filter function is applied to the control plane values, acting on areas adjacent the edge, to create a distribution of control plane values over an area adjacent to the edge. Error diffusion or dithering of the filtered values is then applied to quantize intermediate values generated by the filter function to legal values giving the illusion that the edge changes gradually from the first data set to the second data set, thereby creating a softened edge effect, using only a single control bit in the image data.
摘要:
An electrostatographic printing machine in which a plurality of transparencies are reproduced. The transparencies are stored in an ordered sequence and advanced automatically into communication with the reproduction system so as to form ordered sets of copies thereof.
摘要:
A system and method are disclosed for an image processing system including a threaded scheduler providing compact and efficient dataflow as a pipeline management and data flow layer.
摘要:
A scheme that generates image processing source code for custom applications automatically by using structured image (SI) technology in a way that takes advantage of the unbound and incomplete features of SI. Resulting custom applications developed by this method can be defined and converted to running source code in minutes, or shipped to a co-user of the system in a compact portable form for remote code generation.Nested sub-component references and associated image processing operations necessary to generate an output raster image are obtained from a structured image template. Image processing operations and the order of said operations within an image processing definition are stored within the structured image definition. Unbound structured image references to undefined component objects and incomplete structured image references to image processing operations and parameters not explicitly defined within said structured image are input options. Source code is generated from structured image definition language automatically utilizing a modified structured image render program which analyzes said structured image definition language. The code can be used for further rendering or code modification activities.
摘要:
A method and device for describing a complex color raster image as a collection of objects in a hierarchical and device independent format. The purpose of structured imaging (SI) is to expand the scope of a raster image to a collection of individually manipulable component objects. An SI is a hierarchical description of a single output image raster which may be used as one component of a page in a structured document. Objects contributing to the output raster may originate from text, graphics, other rasters or a combination thereof, and all maintain their heritage for selectability and modification. The SI describes not only the source data but also the image processing operations required for rendering the output raster. SI technology supports re-editability, customization and enhancement, automatic image assembly and high performance imaging. Thus, such a model has implications not only in an image editing and processing arena, but also in the filing and printing services used for image handling.
摘要:
A half-tone screen in which a substantially transparent substrate has a plurality of opaque regions disposed thereon. The opaque regions are arranged in at least a high frequency repetitive pattern and a low frequency repetitive pattern. This type of screen may be employed to modulate the light image of a color transparency being reproduced by an electrophotographic printing machine.
摘要:
A method of correcting out-of-range 8-bit pixel values, which should range from 0 to 255 by successively finding an out-of-range pixel, correcting it by adding (subtracting) an amount to restore that value to 0 (255), and then subtracting (adding) an equal amount to an adjacent pixel or pixels. An alternative, most useful for text, is to find an out-of-range pixel, and then replace it, and all adjacent pixels that are within a predetermined limit of 0 (255), with 0 (255).
摘要:
An image editor includes a pixel buffer for storing color data for an image to be edited. A monitor screen displays the image and an active area having a graphic that represents two color descriptor variables. A pair of overlays controls the respective color descriptor variables singly or together. In one embodiment, the active area is a circle with a color wheel about which hue varies angularly and along the radius of which chroma varies. A radial overlay line controls hue and a concentric radially movable ring controls chroma. In another embodiment among others, the active area is a square with a checkerboard graphic. Black and white squares within the checkerboard indicate increasing brightness in the vertically upward direction and increasing contrast in the rightward horizontal direction. Horizontal and vertical hairline overlays control the brightness and contrast, respectively.