摘要:
A method of controlling an image forming apparatus in accordance with the invention can include the steps of: providing a system tone reproduction curve; representing a manually adjustable tone reproduction curve; modifying the manually adjustable tone reproduction curve to be consistent with the system tone reproduction curve; and cascading the manually adjustable tone reproduction curve with the system tone reproduction curve to provide a new adjusted tone reproduction curve. The method in accordance with the invention enables a user to achieve enhanced flexibility in determining how to adjust an output image. The method can also determine a new system tone reproduction curve, based upon the current settings of the manually adjustable tone reproduction curve, in real time, which reduces the amount of storage space required.
摘要:
A method and apparatus for configuring an image path of an image processing apparatus is herein described. The image processing apparatus includes at least an input terminal or scanner for inputting or scanning document into image data and an output terminal or printer for printing documents. The method includes selecting one of a plurality of output modes using a selection device associated with the image processing apparatus. Based on the selected output mode, an image path among a plurality of image processing elements of the apparatus is selected among a plurality of image paths. Each image path corresponds to one of the plurality of output modes. After a document is scanned with the scanner into image data, the image data is processed with the processing elements in the selected image path, and output or printed based on the processed image data.
摘要:
Contrast and brightness adjustments can be made to a system tone reproduction curve. These contrast and brightness adjustments can be made, for example, by user, via a user input device, or alternatively, automatically detected, based on an image analysis routine. By determining one or more generic tone reproduction curves, and interpolating these tone reproduction curves with the system tone reproduction curve, a new, adjusted tone reproduction curve is produced. This allows for a determination of the adjusted system tone reproduction curve as opposed to calculating and restoring the families of system tone reproduction curves adjusted for all the possible combinations of contrast and brightness.
摘要:
A digital scanner or copier is provided that can dynamically adjust the black point of an image to be scanned based on detected background level of the document. A pre-scan acts on a small scanning window near a leading edge of the document to obtain a histogram of grey-level values. From this, the background level of the document can be obtained to determine a white point of the image. Additionally, a black point of the image is originally set to a default offset value. However, an adjustment factor based on the detected white point is used to adjust the default offset value to a value that increases the dynamic range of the output image, while still maintaining solid black for black areas of the image.
摘要:
A method and apparatus for configuring an image path of an image processing apparatus is herein described. The image processing apparatus includes at least an input terminal or scanner for inputting or scanning document into image data and an output terminal or printer for printing documents. The method includes selecting one of a plurality of output modes using a selection device associated with the image processing apparatus. Based on the selected output mode, an image path among a plurality of image processing elements of the apparatus is selected among a plurality of image paths. Each image path corresponds to one of the plurality of output modes. After a document is scanned with the scanner into image data, the image data is processed with the processing elements in the selected image path, and output or printed based on the processed image data.
摘要:
An image processing system receives image input terminal information and image output terminal information. Based on the content of the image input terminal information and the image output terminal information a new system tone reproduction curve is determined. This device independent methodology allows system tone reproduction curves to be generated as needed, and allows the additional flexibility for changes in the image input terminal or the image output terminal.
摘要:
A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used. A filter also generates a contone value. A selector selects between the look-up table contone value and the filter contone value based an image context type.
摘要:
Training sets consisting of pairs of input images and desired images can be used to produce maps intended for future use in transforming input images into final images. The maps, however, often have improper elements based on incomplete or noisy data. The noisy data and incomplete can be identified via statistics derived from the training set. The map can output a code value instead of a substitution for an improper element. An additional stage of image transformation can identify improper pixels having the code value and replace the code value with an analytic value that is more appropriate.
摘要:
A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used wherein each lookup table corresponds to an image context type.
摘要:
The image data processing system and method disclosed, processes intermediate compressed binary data representing images scanned for copy or exporting, thereby enabling storage of the copy or export file to a common memory storage device. According to an exemplary embodiment, the image data processing system comprises a binary lossless decompress module, a binary to contone restoration module, and an export processing module, the export processing module processing multiple bit image data for exporting to an image data receiving device.