Abnormal state detection method for optical indicating device

A technology of indicating device and abnormal state, applied in the direction of instrument, electrical digital data processing, and data processing input/output process, etc., can solve problems such as output, and achieve the effect of more resources, less calculation, and lower power consumption

Active Publication Date: 2013-10-02
UHDEVICE ELECTRONICS JIANGSU CO LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for detecting an abnormal state of an optical pointing device, which is used to solve the problem that the optical pointing device relies on the output of a motion vector when processing an abnormal state

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
  • Abnormal state detection method for optical indicating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The abnormal state detection method of the optical indicating device of the present invention is applied to the optical indicating device. The optical indicating device is provided with an image sensor array, and the image sensor array samples an external frame image and outputs a pixel matrix corresponding to the image sensor array , the method includes the following steps:

[0012] (1) Obtain the sum of the number of abnormal pixels in the row, that is, each pixel in each row and the M adjacent column pixels on one side are grouped, and the M+1 pixels are compared in turn. If this M+ If the pixel value of one pixel is increasing or decreasing, and the absolute value of the difference between adjacent pixels is greater than a set threshold A, then the pixel is called a row abnormal pixel, and the row abnormal pixel counter is increased by 1, otherwise, the row abnormal pixel The abnormal pixel counter does not increase, and the sum of row abnormal pixels is obtained in...

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 discloses an abnormal state detection method of an optical indicating device. The optical indicating device is provided with an image sensor array, wherein the image sensor array samples an external image and outputs a pixel matrix corresponding to the image sensor array. The method comprises the steps of calculating total row abnormal pixel number or/and total column abnormal pixel number, and comparing with a preset threshold to judge whether the optical indicating device is in an abnormal state. The method is low in calculation load, the required resource is few, so that the power consumption of the optical indicating device can be reduced; the normal operation of the optical indicating device can be confirmed; for abnormal pixels, each pixel in each row or column and pixels in adjacent M columns or rows on one side are taken as a group; the M+1 pixels are sequentially pairwise compared; and if pixel values of the M+1 pixels are increased or decreased progressively, and the absolute value of the difference of every two adjacent pixels is greater than a set threshold A, the pixel is a row abnormal pixel.

Description

【Technical field】 [0001] The invention belongs to the optical image processing technology, in particular to a method for detecting the abnormal state of the optical indicating device applied in the optical indicating device. 【Background technique】 [0002] An optical pointing device (such as a photoelectric mouse, etc.) obtains an image of an external working surface or an object (such as the working surface of the optical character pointing device, an external object or a finger) through an image sensor array (such as N rows and N columns), and digitizes it. After processing, the image values ​​of the multiple image sensors (that is, corresponding to each pixel) form a matrix of N rows and N columns, and then use image processing algorithms for subsequent processing and judgment, such as calculating the optical the motion vector of a pointing device or finger, which controls the movement of a cursor (such as an optical mouse) or a graphic or object (such as a joystick) on t...

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 Applications(China)
IPC IPC(8): G06F3/033
Inventor 谢承华刘建
Owner UHDEVICE ELECTRONICS JIANGSU CO LTD
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