Hitachi Software Engineering Company, Ltd.

Naruto Takasaki

Yutaka Tanaka

Takashi Hino

Nobuyuki Shimizu

Toyoaki Suzuka

Hitoshi Inubushi

Yutake Tanaka

Go Nakanishi

Kanji Yokokawa

Images on a plurality of adjacent maps are accurately connected without performing positional displacement at their connecting boundaries, thereby obtaining a single seamless image. A plurality of corresponding points to be connected are specified on adjacent images. The amount of movement for each picture element on the image is calculated in order to make the specified corresponding points coincide. All of the picture elements in the image which are to coincide are moved according to the results of the calculations.

Image compounding method and device for connecting a plurality of

A method for the entry of a graphic character displays a character in a graphic file on a display unit through a graphic processor having a graphic display function, which involves specifying a parallelogram in a space in which the graphic character to be displayed exists and a character code of the graphic character in defining the graphic character; and creating a graphic character data of the graphic character by determining an attribute representing a geometric shape of the graphic character on the basis of the parallelogram and the number of characters of the character code. The arrangement of this method allows the graphic processor to enter graphic characters efficiently in displaying characters on the graphics.

Method for the entry of a graphic character by specifying a

A graphics processing system has an image memory for storing data of an image, a data memory for storing data of a vector graphic, a display unit for displaying the data of the image and the data of the vector graphic, an input device for providing an instruction to edit the vector graphic and the image, and a library in which a command having a function for processing including an operation of the vector graphic and a command having a function for processing including an operation of the image are registered; in which the data of the image and the data of the vector graphic are displayed in a superimposed way, operated, and edited, and wherein a series of the processing for operating and editing the data of the vector graphic and the data of the image is performed through the command of the library.

Graphics processing system having function for operating and editing

A linear image is traced on the basis of an instruction to trace the linear image through an image processing system for processing a trace of the linear image of data of an image, having an image memory for storing the data of the image, a data memory for storing data of a graphic, a display unit for displaying the data of the image and the data of the graphic, an input unit for entering the instruction, and a semi-automatic image trace processing section for processing the trace of the linear image on the basis of the instruction. The candidate of the branched direction is detected by tracing the linear image having a line width smaller than a predetermined line width; setting a point on a contour line of the linear image as a first trace base point when the trace detects a branched point at which the line width of the linear image to be traced expands temporarily; transferring the first trace base point on the contour line by a predetermined distance and setting a point existing on the contour line opposite to the contour line on which the first trace base point is located and in the position closest to the first trace base point, as a second trace base point; and detecting a middle point between the first trace base point and the second trace base point as a candidate of the branched direction.

Method for determining a candidate of a branched direction of a linear

An image processor for performing trace processing for tracing the line image has an image memory for storing image data, a data memory for storing graphic data, a display unit for displaying the image data and the graphic data, an input unit for entering trace designation, a semi-automatic image trace processing section for performing the trace processing for tracing the line image of the image data in a semi-automatic way, and a tracing-rule description processing section for designating a trace method for tracing the line image. The line width of the line image is detected by designating a point in the vicinity of a pixel line as a start point for detecting the line width of the line image as an object of tracing the image data, retrieving a change point for changing pixels on a contour of the line image from the start point, and detecting the line width by detecting the number of the pixels in a continuous pixel line arranged in the line-width direction of the line image from the change point.

Method for the detection of line width of line image in image processor

An image processor includes an image memory for storing image data; a data memory for storing graphic data; a display unit for displaying the image data and the graphic data; an input unit for giving an instruction to trace; and a semi-automatic image trace processing section for processing the line image of the image data. Two points on the contours at both sides of line image are set as trace base points for the line image, and the line image is traced, while determining end points and branch points, by moving the two trace base points on the contours at both sides of the line image concurrently in the same directions, while monitoring a relationship between the two trace base points and absorbing some noise of the different line widths.

Method for tracing a line image by monitoring the distance between two

An image processing device has an image memory for storing image data, a semi-automatically trace processing for tracing line images of the image data by entering a trace starting point of the image data and an instruction to start tracing, and a display input unit for giving an instruction to enter on a display screen, thereby starting tracing the line images of the image data from the trace starting point thereof. In the method for entering the trace starting points, the image of the image data to be traced is displayed on the display screen through the display input unit, a line segment for specifying the trace starting points thereof is entered so as to intersect the line image displayed on the display screen, an intersecting point at which the line segment therefor intersects the line image is determined, and the resulting intersecting point is entered as a trace starting point, together with an instruction to start tracing.

Method for the input of a trace starting point of an image

A graphics processing device has an image data storing unit for storing image data, a graphic data storing unit for storing graphic data, a coordinate inputting unit for inputting coordinates, a display unit for displaying the image data and the graphic data, and a graphic operation processing unit for processing the image data and the graphic data. The graphic data are processed with reference to the image data displayed on the display unit by designating a control point. The designation of the control point is made to allow its image characteristic point recognizing section to set a predetermined region in the neighborhood of an input point inputted for the graphic operation, to recognize a shape of an image in the predetermined region, decide a characteristic point of the image corresponding to the shape of the image recognized, and to deliver the characteristic point of the image as the control point to a control point inputting unit.

Graphics processing device

A method for re-tracing an end point of an image by an image processing device for converting the line images of the image data into vector data in a semi-automatic way by tracing plural line images and converting them into one vector data. The method for re-tracing the end point of the image involves tracing the line images by transferring the tracing points on the line images and continuing the previous trace processing for re-tracing the line image which follows by waiting for an instruction to re-trace from the input unit and entering the instruction to re-trace the image specified for re-tracing when the tracing point has reached the end point of the line image whose tracing points have been traced.

Method for re-tracing the end point of an image

A pattern recognition apparatus is capable of subjecting a large image region to image processing with an image memory having a small memory capacity and providing a contouring line data of an image in the same manner as processing with an image memory having a large memory capacity. The pattern recognition apparatus is provided with an image input means for inputting an image; an image data storing means for storing image data; a contouring line data storing means for storing contouring line data; and a contouring line data connecting means. The contouring line data connecting means is to partition image data into adjacent partitioned regions so as to allow them to overlap with each other by only one pixel, to delete a contouring line data in an overlapping portion of the adjacent partitioned regions from a contouring line data for the image data in each of the partitioned regions on the basis of a vector data passing in a predetermined direction, and to connect the contouring line data of an open drawing so as to match their terminal points in the overlapping portion thereof with each other, thereby providing a total contouring line data.

Pattern recognition apparatus

A partitioned image processing device executes image processing of large size drawing data using an image memory of small capacity to provide substantially the same processed result as that obtainable by using an image memory with a large memory capacity. An image data input device for inputting the image data; an image memory for storing the image data; and an image processing device for performing the image processing of the image data read in the image memory are provided. The image processing device is designed to partition the image data read-in from the image memory into partitioned regions; to read the partitioned regions of the image data in the image memory so that the portions of the image data in the adjacent partitioned regions partly overlap with each other, and to execute the image processing of each of the partitioned regions.

Partitioned image processing system for an image processing device

In converting line image data of a minute shape portion into polygonal line data, a pattern recognition apparatus is designed so as to determine polygonal line data from line image data by conventional polygonal line conversion processing technique, to presume an optimum shaping for for a shape formed by a group of the polygonal line data from the relationship with the drawing therearound, and to judge whether a path of the shaping form passes on the line image at a given constant percentage or larger. This permits an approximation of a minute shape portion likely to undergo an influence from digital noise to polygonal line with a high reliability.

A method of recognizing an arcuate or circular arc segment is used with an image processing apparatus. In a first step, two arbitray image structuring points are selected as segmenting end points from the dot-line image data. next, an image structuring point among the image structuring points present within a segment divided by the segment end points that is located furthest from and in a direction perpendicular to a straight line connecting the given structuring points and within a distance which is equal to or larger than a constant distance is extracted. The, three consecutive, adjacent polygonal-line structuring points are recognized as an arcuate or circular arc segment when a distance between a virtual circle passing through the three adjacent points and a median point of two line segments formed by the three consecutive points is equal to or less than the constant distance.

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Yokohama, Japan

Naruto Takasaki