There is described an image processing apparatus, which makes it possible not only to eliminate the deterioration of the perceptibility, but also to determine the pages being suitable for applying the predetermined image processing. The control section determines specific pages, being suitable for applying a predetermined image processing, based on the attributes detected by the detecting section, so as to apply the predetermined image processing to the specific pages. On the other hand, the control section applies image processing, including a variable power processing, to both the partial image area and the partial character area by employing different magnification factors, so as to generate a size-changed partial image area and a size-changed partial character area, and to arrange both of them into a predetermined imaginary area being smaller than an area of the original image, so as to accommodate them within the predetermined imaginary area.

Image-processing apparatus

PURPOSE: To obtain a picture output signal with a satisfactory gradation with a small amount of memory and to obtain high picture quality by performing the interpolation processing to a picture output signal obtained by referring to a lookup table by means of a quantized picture reading signal. CONSTITUTION: A lookup table 107 storing the correspondence relation of the optimum density signal with respect to a color picture color separation signal separated into for each color is provided. A picture processing part 102 referring to the lookup table 107 and converting the color picture color separation signal into the corresponding density signal and a picture output part 103 are provided. The picture processing part 102 quantizes the color picture color separation signal from a picture input part 101 to be inputted to the lookup table 107, and performs the interpolation processing against the output from the lookup table 107. Thus, the picture output signal with a satisfactory gradation can be attained with the small amount of memory and the high picture quality can be obt. COPYRIGHT: (C)1992,JPO&Japio

Color picture processor

An image recording apparatus includes means for recording image data in a recording medium; means for obtaining information for determining a data amount reduction remaining force of image data recorded in the recording medium; means for selecting image data determined to have a large data amount reduction remaining force based on the information obtained by the means for obtaining information, with a priority; and means for performing a data amount reduction process against the image data selected by the means for selecting.

Image recording apparatus and image data selection method

The inventive image processing apparatus takes steps of 1) dividing an image to be processed into numerals of blocks; 2) determining whether a block is a color block or not; 3) determining whether the image is a color image or not based on the rate of color blocks to the entire blocks. Thereby, valid color pixel rate can be obtained at blocks belonging to a color region even though an image is almost monochrome but partially colored. Accordingly, the inventive image processing apparatus can appropriately determine whether the image is a color image or not.

Image processing apparatus, image forming apparatus and color image determination method thereof

Disclosed are an image processing method, apparatus and storage medium for forming a mosaic image by combining a plurality of material images. The method includes dividing an image, which is the basis of the mosaic image, into a plurality of tile areas, obtaining an image characteristic of each tile area obtained by division, calculating distances between the image characteristics of each of the tile areas and image characteristics of respective ones of the plurality of material images, selecting material images corresponding to each of the tile areas in dependence upon result of calculation of the distances, forming a mosaic image by pasting the selected material images to the corresponding tile areas, and subjecting this mosaic image to filtering processing, thereby generating a mosaic image in which the joints between tile areas are no longer noticeable.

Image processing method, apparatus and storage medium therefor

PURPOSE: To improve the entire compression efficiency by dividing the area of the binary image including a half tone image which is subjected to a pseudo expression into a half tone image part and the other and subjecting the half tone image part to irreversible encoding. CONSTITUTION: Binary image data 101 inputted from a binary image input part 1 are divided into the half tone image part and the other which are subjected to pseudo expression in an area divider 2. In this time, the image judged as a half tone image part is cut down in a rectangular shape. A multilevel device 3 performs the multilevel processing on rectangular area data 102 and outputs them to a multilevel encoder 4. The encoder 4 performs the JPEG encoding being the irreversible compression in a block unit using the orthogonal conversion and outputs multilevel encoding data 106. A binary encoder 5 effectively encodes the image without the rectangular area by the JBIG encoding processing and outputs binary encoding data 107. An RAE6 encodes the number of the rectangular areas, the value of the corner offset value, and the rectangular size and outputs encoding data 108. A multiplexer 7 arranges these codes in a proper order and outputs encoding data 109.

Method and device for processing picture

PURPOSE:To speed up an affine transformation processing by providing a storage means to previously store two respective kinds or above of differential values to update an input coordinate corresponding in accordance with a prescribed changing quantity related to an output coordinate CONSTITUTION:An output coordinate generating means generates the output coordinates (X, Y) by accumulating-adding prescribed differential values DELTAX' and DELTAY' along a line parallel to a raster scan when the input coordinate is affine-transformed The storage means previously stores two respective kinds or above of differential value components to form differential values DELTAx and DELTAy to update the input coordinates (x, y) corresponding in accordance with the prescribed changing quantities DELTAX and DELTAY relating to the output coordinates (X, Y) An input coordinate generating means operates the differential values DELTAx and DELTAy from two respective kinds or above of the differential value components in accordance with the prescribed changing quantities DELTAX and DELTAY of the output coordinates (X, Y) generated by the output coordinate generating means, adds the results to the input coordinates (x, y) before the change and generates the input coordinate corresponding to the output coordinates (x, y) generated by the output coordinate generating means Thus, the high speed processing of the affine transformation can be executed

Picture information processor

PROBLEM TO BE SOLVED: To provide an image processor, a method and a program capable of decoding and reproducing a clear image by using transferred image data even when image data transfer is interrupted, and to provide a computer readable recording medium. SOLUTION: An encoder 12 performs progressive coding of an image designated from an image DB 11 storing original images of a transmitting side terminal 1. The coded image data are transmitted from a transmitter 13 and received by a receiver 21 of a receiving side terminal 2 through a network 3. The received image data are stored in a receiving buffer 22 and a receiving rate is detected by a buffer monitor 26. When the variation of the number of received bytes is smaller than a prescribed value, the reception of the image data is stopped. A received data analyzer 23 uses the received image data to perform data interpolation, etc., a decoder 24 decodes the image data, and a display 25 shows the decoded image data on the screen.

Device, method and program for processing image and computer readable recording medium

PURPOSE:To attain efficient coding by using a binarizing signal through the binarization so that the probability of overlap of components dots is increased CONSTITUTION:Three color R, G, B 8-bit signals are inputted from a picture reader to a binarizing circuit 10 and a sequence discrimination circuit 11 The circuit 11 discriminates the amplitude of the R, G, B signals and outputs a sequence command signal 106 to the circuit 10 The circuit 10 uses the signal 106 to apply binarization processing to the R, G, B signals in the larger order by the error dispersion method and outputs binarized RGB signals 103-105 to a prediction coder 12 The coder 12 generates a code word 108 by the entropy coding and sends it to a decoder 14 The R, G, B binary data 109-111 decoded by the decoder 14 are stored in a memory 15 Outputs 112-114 of the memory 15 are displayed on a display device 16 to confirm the picture

Binarizing method for color picture

PURPOSE: To select a coding method offering an excellent coding efficiency based on a size of coding object data among plural coding methods by providing a 1st coding means and a 2nd coding means being specific means respectively to the device. CONSTITUTION: This coding device is provided with a 1st coding means used to code difference data when the size of difference data between a coding object picture element and pixel other than the coding object pixel in image information is smaller than a prescribed size and with a 2nd coding means different from the 1st coding means when the size of the difference data is larger than the prescribed size. The image data 100 inputted from the image memory 1 is inputted to a coding discrimination section 2 and a coding section 3. The coding mode decision section 2 selects the coding mode in which the code length is expected to be shorter when the image data 100 are DPCM-coded and generates the coded mode signal 101. The coding mode signal 101 switches a DPCM coding method.

Osawa Hideshi

Papers

Method and device for processing picture

Picture information processor

Device, method and program for processing image and computer readable recording medium

Binarizing method for color picture

Coding device and method thereof