Coordinate transformation method and device

A technology of coordinate transformation and coordinate transformation matrix, which is applied in graphics and image transformation, image data processing, instruments, etc., can solve the problems of affecting machine accuracy, inaccurate mapping relationship, affecting the quality and efficiency of image processing algorithms, etc., to improve quality and efficiency. Efficiency, the effect of improving accuracy

Active Publication Date: 2017-05-24
CETC BEIJING ELECTRONICS EQUIP
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a coordinate conversion method and device to solve the problem that the mapping relationship is inaccurate, affects the quality and efficiency of the image processing algorithm, and affects the accuracy of the machine

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coordinate transformation method and device
  • Coordinate transformation method and device
  • Coordinate transformation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0055] The present invention provides a coordinate conversion method and device, which determines pixels by non-unidirectional movement of a dicing machine workbench, solves the problem of mapping between image pixel coordinates and workbench coordinates, and improves the accuracy of mapping.

[0056] Such asfigure 1 As shown, the coordinate transformation method provided by the embodiment of the present invention includes:

[0057] Step 1, taking one point as the origin of the coordinate system, obtaining the first worktable coordinate difference vector of the worktable moving from the origin to the first target position and the image of the workpiece loaded on the workbench moving from the origin a first image coordinate difference vector to the first ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a coordinate conversion method and device, relating to the field of a wafer scriber and solving the problems of inexact mapping relationship, influence to quality and efficiency of an image processing algorithm and influence to precision of a machine. The coordinate conversion method comprises the steps of: regarding one point as an original point of a coordinate system, and obtaining a first workbench coordinate difference vector of a workbench from the original point to a first target position and a first image coordinate difference vector of an image of a processing object on the workbench from the original point to the first target position; obtaining a coordinate conversion matrix based on the first workbench coordinate difference vector and the first image coordinate difference vector; performing conversion between the coordinate of the workbench and the coordinate of the image of the processing object based on the coordinate conversion matrix. Pixels are determined through non-single-direction movement of the workbench of the wafer scriber, so that the problem of mapping between the image pixel coordinate and the workbench coordinate is solved, and the mapping precision is improved.

Description

technical field [0001] The invention relates to the field of dicing machines, in particular to a coordinate conversion method and device. Background technique [0002] The visual recognition system of the dicing machine is a computer-based real-time image processing system. The operator or computer recognizes and analyzes the wafer image displayed on the screen, and then performs corresponding operations. The accurate operation of the wafer requires that the corresponding position of the actual wafer can be accurately located through a certain point in the image, that is, the precise mapping between the image pixel coordinate system and the workbench coordinate system is realized. important. The following technical problems exist in the prior art. The mapping relationship is inaccurate, which affects the quality and efficiency of the image processing algorithm and affects the accuracy of the machine. Contents of the invention [0003] The technical problem to be solved b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G06T3/00
Inventor 刘晓斌孟繁滨刘婷婷
Owner CETC BEIJING ELECTRONICS EQUIP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap