Matches 51 - 89 out of 89 < 1 2
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5978512 Polygonal approximation method and apparatus for use in a contour encoding system  
An apparatus polygonally approximates a contour of an object expressed in a digital video signal. First of all, the apparatus determines a pair of vertices on the contour. Then, a line segment...
5978511 Method and apparatus of inputting and outputting color pictures and continually-changing tone pictures  
An apparatus for inputting, compressing, memorizing and regenerating continually-changing tone pictures or color pictures, which allows us to store the image data by a small amount of memory, to...
5974174 Picture-information processing apparatus  
In a picture-information processing apparatus, information of an edge in a picture is generated from information of luminances in the picture. Data of a mask corresponding to the edge is generated...
5966469 Sequential polygon approximation apparatus for contour and method thereof  
A sequential polygon approximation apparatus for a contour and a method thereof which are capable of sequentially extracting a vertex in the order of a contour pixel when performing a polygon...
5933149 Information inputting method and device  
An information inputting method, as well as an information inputting device, extracts effective characteristic points from inputted stroke information and outputs coordinate information relating to...
5929917 Method and apparatus for adaptively coding a contour of an object  
A contour encoding method codes a current contour in a current frame based on a predicted current contour which is selected among previously reconstructed contours within a previous frame. Once the...
5923777 Method for irregular triangle mesh representation of an image based on adaptive control point removal  
An image representation method for representing an image using triangular mesh which is adaptively formed based on a degree of texture description of the image. The image representation method...
5859927 Method and system for the reduction of memory capacity required for a digital representation of an image  
A method for compressing a first bit digital input representative of first pixel data into a second bit digital output representative of second pixel data, the method comprises the steps of...
5832127 Apparatus and fast method for convex-polygon bounding of closed contours  
An apparatus and computer-implemented polygon bounding method generate, in a first step, a binary array representation of a closed contour input object relative to a reference coordinate system....
5774595 Contour approximation method for representing a contour of an object  
A contour approximation method accurately reconstructs a contour of an object by adding an extra vertex to the complex contour segment based on a curvature of the pixels on the contour image. The...
5764797 Method and system for modeling handwriting using polynomials as a function of time  
A method and system for modeling handwriting using polynomials as a function of time. In a preferred embodiment, a user inputs handwriting by writing with an electronic pen on an electronic tablet....
5754703 Method for encoding a contour of an object in a video signal  
A set of first errors selected from sets of errors indexed as, e.g., sets of first to Kth errors between contour segments and corresponding line segments at a predetermined number of sample points...
5694331 Method for expressing and restoring image data  
A method for expressing image data and for image restoration does not depend on the format of input/output devices, does not suffer from block distortion in the restored image, provides superior...
5691769 Apparatus for encoding a contour of an object  
A contour encoding apparatus determines vertex points on the previous contour of the previous frame based on a polygonal approximation. A set of first approximation errors is calculated at a...
5675669 Apparatus for encoding/decoding an image signal having a still object  
An encoding system effectively reduces the substantial amount of data for transmission by way of employing three encoding channels which perform a compression process for individually extracting...
5668608 Motion vector estimation method and apparatus for use in an image signal encoding system  
An inventive apparatus estimates correct motion vectors between a current and its previous frames for feature points selected from the previous frame. A motion vector detector first determines a...
5654771 Video compression system using a dense motion vector field and a triangular patch mesh overlay model  
In a temporal sequence of digitized image frames of video signals, the spatial and temporal image gradients and the pixel-to-pixel motion vectors (dense motion vectors) are obtained between two...
5623555 Method and apparatus for handwriting decompression using estimated timing information  
A method and apparatus for generating a reconstructed image from a compressed image. An exemplary method in accordance with the present invention includes the steps of identifying pairs of...
5592228 Video encoder using global motion estimation and polygonal patch motion estimation  
A video coding apparatus ensuring a high coding efficiency even at a low bit rate includes a moving object analyzer which extracts a moving part from an input picture signal, analyzes its motion,...
5572605 Apparatus and method for inputting, compressing and outputting characters, illustrations, drawings and logomarks  
A method of compressing inputting two-dimensional object, compressing the two-dimensional data in a short time to a small amount of data and reproducing in any size at any position. This invention...
5568567 Two-dimensional image processing method and apparatus for approximating circular arc configuration of an object  
Two-dimensional image data of an object is processed to inspect a circular arc configuration of the object. Initially, the two-dimensional image data is subjected to a data extraction process in...
5384643 Image transmission system with patterned data compression  
A storage, retrieval, and transmission system is configured to provide fast, efficient telecommunication access to digitized images (e.g., medical diagnostic X-ray images) to multiple requesting...
5335298 Automated extraction of airport runway patterns from radar imagery  
Image processing for extracting terrain features from an image formed of an array of pixels is disclosed. In a particular embodiment, each pixel in a neighborhood is averaged in a direction which...
5295201 Arrangement of encoding motion image signals using motion compensation and orthogonal transformation  
A plurality of frame image signals are successively applied to an image signal encoder. A motion region of an incoming frame image signal is extracted and then approximated in shape to a polygon....
5214718 Scan-in polygonal extraction of video images  
A video image is extracted and stored as a geometric figure by generating a binary pixel map of the image. The binary pixel map contains one bit for each pixel in the image, representative of the...
5125038 Face and edge trim method for an automatic mesh generation system  
A method is described for producing a mesh of finite elements that are entirely within a body to be analyzed, the body exhibiting edges and surfaces. The method comprises the steps of: producing an...
5115479 Image data processing method for compressing an image by approximating curves using a polynomial  
A method of processing an image data of a two-dimensional curve comprises steps of detecting an initial point of the curve as a first vector data, detecting a terminal point of the curve as a...
5101436 Hybrid image editor  
A hybrid image editor for editing raster and vector entities with a common set of vector edit operations. Raster and vector entities are stored in a single image layer. Raster entities are...
5036544 Apparatus for discriminating linearity of line segment in image processing system  
An apparatus and method for discriminating the linearity of a line segment in an image processing system consisting of elements for extracting and tracking a train of points from a high contrast...
4969201 Method of recognizing a circular arc segment for an image processing apparatus  
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...
4853971 Method and apparatus for processing image data  
On the basis of vertex coordinates of polygons to be recorded, mode data is provided for every segment forming the polygons. The mode data includes mode data as to whether points on the segment are...
4771474 Apparatus for processing character or pictorial image data  
An apparatus for processing character or pictorial image or the like for splitting the outline of a character, which is developed on x- and y-coordinates, into a plurality of blocks [P 1 , P n ]...
4748675 Method for controlling image processing device  
A method for controlling an image processing device wherein the contour of a certain segment of an image, or pattern is polygonal-approximated so that it is represented by a row of vertex data and...
4718103 Method and apparatus for on-line recognizing handwritten patterns  
A handwritten pattern approximated to a series of polygonal lines consisting of segments is compared with a candidate pattern selected from dictionary patterns stored in the memory, basing on the...
4669097 Data compression for display and storage  
The Swinging Door Method of compressing an industrial process data stream is described. Data used for generating a line graph is compressed for display or storage while preserving maximum, and...
4646134 Apparatus for encoding image signal  
An image signal encoding system wherein image signal is directly taken in through video camera, changed to digital data, broken down into PDI basic patterns, and then converted into NAPLPS code...
4630309 Method and apparatus for automatic digitizing of contour lines  
An automatic technique and an apparatus for digitizing of line graphics, letters, etc., which includes the following steps: The image information is obtained from scanning the master and is stored...
4603431 Method and apparatus for vectorizing documents and symbol recognition  
An apparatus codes a scanned document locally representing each graphic element within a prescribed measure of accuracy by a trapezoidal approximation. The invention also includes a method for...
4087788 Data compression system  
A data compression system is disclosed in which the left-hand boundary of a character is developed in the form of a sequence of Freeman direction codes, the codes being stored in digital form...
Matches 51 - 89 out of 89 < 1 2