240 results about "Color image processing" patented technology

A white point adjusting apparatus is provided to adjust an achromatic color level for an input video signal including a plurality of color signals, and display an adjusted image on a liquid crystal module. This adjusting apparatus comprises: a first table for setting a white point by deciding an offset quantity of at least one color signal from a highest gray level for each color temperature; a second table for setting an offset quantity of the color signal to converge a halftone white point for each color temperature set by the first table; and a white point adjusting unit for adding the offset quantities set by the first and second tables and to the input video signal.

A halftone processing section halftone-processes input image data using a plurality of dither threshold planes. An image output section having different output position accuracies between a main scan direction and a sub-scan direction outputs an image corresponding to halftone-processed image data. Each of the dither threshold planes consists of a plurality of the same unit threshold matrixes. In the unit threshold matrix, a relatively medium to high threshold array in a predetermined threshold range corresponding to the entire tone range of the input image data is an aperiodic array and an anisotropic array with neighboring thresholds having close values, in a direction coincident with a scan direction, in which the output position accuracy of the image output means is low. With this configuration, the image output section outputs an image having serial medium and high tone dots in the scan direction.

The invention discloses a multi-mode depth calculation processor and 3D image equipment. The depth calculation processor is characterized in that color image data is received via an input port, first calculation is carried out on the color image data to obtain a colored image, and the colored image is output to host equipment via an output port, so that the depth calculation processor works in a color image processing mode; invisible light image data is received via the input port, second calculation is carried out on the invisible light image data to obtain an invisible light image, and the invisible light image is output to the host equipment via an output port, so that the depth calculation processor works in an invisible light image processing mode; and a structured light image is received via the input port, depth calculation is carried out on the structured light image to obtain a depth image, and the depth image is output to the host equipment via the output port, so that the depth calculation processor works in a depth processing mode.

In an image processing apparatus, a compression processor compresses a color image data, a storage device stores the compressed data, and an expansion processor expands the data read from the storage device. A first background controller controls background of the color image data not yet compressed by the compression processor, while a second background controller controls background of the image data expanded by the expansion processor. A controller activates either the first background controller or the second background controller.

A show-through is removed as follows. Resolution of the color image is reduced and the color coordinate system is transferred to a one having a high independence. Then, edge intensity is calculated, edge-detection is performed. Then, color threshold processing is performed on a region except the edge to estimate a background color image, and the show-through removed image is synthesized. Edge difference image is calculated from respective edge intensity of the original image and the show-through removed image, any portion where the image is degraded due to inadequate processing is detected, a scale for processing (the size of a window) around such portion is reduced and the same processing is performed again. A show-through portion is then identified by calculating a difference between the show-through removed image and the reduced original image, the show-through portion is removed, and the image is printed.

The invention provides a hand posture estimation system and method based on an RGBD fusion network. The system comprises a global depth feature extraction module, a residual module, a multi-mode feature fusion module and a branch parallel interference elimination module. The global depth feature extraction module adopts two parallel paths of cross-fused residual networks, wherein the upper path isa high-resolution feature map, the lower path is a low-resolution feature map, carries out the multi-scale feature fusion by the cross-fusing multi-resolution information, and finally predicts the network output in a high-resolution feature map. An input part of the system is divided into a depth image processing branch and an RGB color image processing branch, the features extracted by the two branches are subjected to multi-mode fusion to form the global features, the global features are sent to a branch parallel interference elimination module to perform feature extraction of hand branches, and the reinforced hand branch features are obtained and used for final joint position prediction. According to the method, the hand posture estimation with higher accuracy is achieved mainly through the information synthesis of the color images and the depth images.

An image processor includes an automatic color determining unit that determines whether an input image signal including a plurality of color signals indicates a color image or a monochrome image, an operation panel for accepting selection of a color processing mode for applying color image processing and a monochrome processing mode for applying monochrome image processing, a filtering processor that applies image processing of at least one of the color processing and the monochrome processing, and an output controller. Even when the monochrome processing mode is accepted, the image processor applies monochrome image processing based on a determination result of the automatic color determining unit.

An image processing device includes a document scanning unit, a color image processing unit, a monochrome image processing unit and a memory. A processing by the color image processing unit and a processing by the monochrome image processing unit are carried out simultaneously. The document scanning unit scans an original document. The color image processing unit converts scanned data obtained by the document scanning unit into color image data. The monochrome image processing unit converts the scanned data obtained by the document scanning unit into monochrome image data. The memory stores both the color image data and the monochrome image data.

The invention comprises a device-independent color space converter 241 that obtains device-dependent color signals on the on the color system color coordinates from first color signals, a gradation compensator 242 that determines a black color signal in the second color signals having the identical or virtually identical density as the black color signal in the first color signals, and a YMC decision section 243 that determines the remaining three variable color signals in the second color signals from the black color signal and the device-independent color signals in the second color signals so that calorimetric consistency of the three variable color signals may be obtained.

A color image processing apparatus is provided with a black text emphasis mode, in which, when compressing an image in a compression processing section, edges of a black text in the image are detected, a foreground layer in which the detected edges of the black text are represented by a binary image is generated, and lossless compression is performed on the foreground layer. When the black text emphasis mode is selected, a background layer in which the difference in density between the edges of the black text and pixels in the vicinity of the edges in the image is reduced is generated, and lossy compression is performed on the background layer. With this operation, in an image obtained by decompressing a compressed file, outline of the black text is clearly represented, and an artifact caused by the lossy compression is suppressed.

The present invention is a method and system for mixed resolution, multi-channel color image processing including compression, transmission and decompression. The color information is defined at a lower resolution since colors generally do not change at a high frequency and higher compression ratios may be obtained with the lower resolution. The edge information contains the commands switch between the foreground and background colors. The edge information occurs at high resolution and high frequency rates relative to the color information. The lower resolution color planes can be pixel replicated to the resolution of the edge information after compression and decompression for proper edge selection to occur. The resulting reconstructed image of foreground and background colors retains high detail.

The present invention provides a color image processing device and a color image processing method which is In order to perform natural and excellent sharpness processing to image data, the color image processing device of invention comprises: a color space converter (1) for converting image signals (RGB) to luminance signals (L), first chromaticity signals (C1) and second chromaticity signals (C2); a luminance signal correcting unit for correcting the luminance signal (L) of a target pixel based on an average luminance signal (L_A) obtained from the luminance signals of the target pixel and predetermined pixels surrounding the target pixel and the saturation signal (S) of the target pixel; a chromaticity signal correcting unit for correcting the first chromaticity signal (C1) and the second chromaticity signal (C2) of the target pixel based on the first and second average chromaticity signals (C1_A, C2_A) obtained from the chromaticity signals of the target pixel and the predetermined pixels surrounding the target pixel, the saturation signal (S) of the target pixel, the average saturation signal (S_A) obtained from the saturation signals of the target pixel and the predetermined pixels surrounding the target pixel, and a hue difference signal (DC); and a color space inverter (15) for inverting the corrected luminance signal (L′), the corrected first chromaticity signal (C1′) and the corrected second chromaticity signal (C2′) of the target pixel to image signals (R′G′B′).

The present invention provides a color image processing apparatus which reduces the amount of color materials consumed that are used to form a color image with reference to an index with high utility. To accomplish this, a color image forming apparatus of the present invention is a color image processing apparatus which applies image processing to image data of an input color image, and outputs the processed image data, and which changes tone values of respective colors of the color image, so that a conversion result obtained when image data of the color image are converted into amounts of color materials becomes an amount based on a reference conversion result, the reference conversion result being obtained when the image data are color-converted by a predetermined color conversion method and the converted data is further converted into an amount of a color material.

The present invention embodies high-accuracy white point adjustment with a simple circuit configuration according to an efficient algorithm in a display system for full digital processing. More particularly, the present invention is directed to a digital video interface 13 for inputting a digital video signal outputted from a host system and a liquid-crystal display monitor 11 for applying color conversion to the digital video signal inputted by the digital video interface 13 without using a look-up table, in which an adjusted-value input logic for inputting adjusted values at predetermined points to achromatic colors between maximum- and minimum-gray-scale achromatic colors and a controller LSI 22 for computing a digital video signal inputted by the digital video interface 13 so as to converge chromaticity coordinates for achromatic colors and outputting a computed digital value in a pipeline manner are used.

The efficient use of memory devices is crucial in processing a large amount of data. In particular, the buffer memory is used in an efficient manner by the use of a buffer memory control unit. The efficient use of the buffer memory is implemented in a high-speed color data processing unit in a color image processing device such as copiers, facsimile devices and printers.

A color image processing apparatus includes an image forming unit configured to form a color image using recording materials of plural colors, an image processing unit configured to implement plural image processing methods that achieve plural types of pseudo-halftone representations, a color measurement unit configured to perform color measurement of the color image formed by the image forming unit, and a control unit configured to control execution of multi-color calibration in which the color measurement unit performs color measurement of a pattern image including plural multi-color patch images formed using recording materials of plural colors by using a smaller number of image processing methods than plural image processing methods used in single-color calibration for correcting reproduction characteristics of single-color images formed by the image forming unit and in which reproduction characteristics of a multi-color image formed by the image forming unit are corrected using a result of the color measurement.

A file editing apparatus is provided that edits a color-image processing file in which limitations can be imparted on the display of edit history information that corresponds to a new shooting mode. The apparatus includes an editing unit that edits a color processing file; a display control unit; and a storage unit that stores the color-image processing file including edit history information of the color processing file edited by the editing unit, and edit history display control information for the display control unit to control display of the edit history information.

A high-speed melon-fruit quality valuating system based on machine's visual sensation is composed of image pick-up system, optical imaging system and optical fibre sensor. The said optical imaging system consists of a lighting box with brosted glass on its inner surfaces, two color CCD cameras, and dot light source uniformly arranged in said box. The said image pick-up system has two image pick-up cards connected to said two color CCD cameras and triggered externally. The said optical fibre sensor can generate periodical level signals to control the pick-up of image. The image is post-treatedby the image processing unit of industrial control computer.

The invention discloses a male and female graine laser separator and a separation method thereof. The separator comprises an elevated working platform, an egg raising paper positioning system, a graine color image processing system, a laser generation and light deflection scanning and egg launching system, and a computer. The separation method comprises the following steps: starting the separator, resetting the shifted working platform, placing egg raising paper on a negative-pressure adsorption platform, and starting an air pump to absorb the egg raising paper to be flat; starting a color image acquisition program, and controlling a color image sensor to shoot an egg raising paper image and transmit the egg raising paper image to the computer which processes data, gives out a work instruction for launching time-sequence laser pulse to a laser generator and an electric control device, and gives out a work instruction for light deflection scanning to a galvanometric scanning and electric control device, and generating laser beams to shoot female graine; and placing novel egg raising paper after the task is completed, and repeating the steps. The separator can automatically and accurately separate male and female graines with different graine colors at a high speed so as to save labor and improves the separation precision.