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Method for measuring small two-dimensional displacement by using three primary colors of computer camera

A two-dimensional displacement and camera technology, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of limited applicable occasions and achieve clear imaging effects

Inactive Publication Date: 2013-07-24
CHONGQING TECH & BUSINESS UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this invention patent is aimed at a measurement environment with uniform and stable illumination, and its applicable occasions are limited

Method used

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  • Method for measuring small two-dimensional displacement by using three primary colors of computer camera
  • Method for measuring small two-dimensional displacement by using three primary colors of computer camera
  • Method for measuring small two-dimensional displacement by using three primary colors of computer camera

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Embodiment Construction

[0049] figure 1 is a block diagram of the measuring device of the present invention. Wherein the computer camera (1) is aimed at the object to be measured, and the distance between the two is within the effective focusing and imaging range of the optical lens of the camera (1). Described camera head (1) is made up of optical lens (2), photoelectric sensor chip (3) and USB interface (4), is connected to the USB interface (6) of a common computer system (5) by its configured USB cable , the computer system (5) is also equipped with a CPU (7), a memory (8), a display card and a display (9), a hard disk (10), a keyboard and a mouse (11), an operating system (12), a camera driver ( 13) and a specially written camera shooting and three primary color brightness frame matching program (14).

[0050] The method for measuring the tiny two-dimensional displacement of an object by using the three primary colors of a computer camera includes a number of steps, which have been clearly exp...

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Abstract

The invention relates to a method and a device for measuring small two-dimensional displacement by using three primary colors of a computer camera, and provides a method and a device for performing non-contact measurement on displacement by taking the computer camera as a displacement sensor. The device is formed by connecting a camera and an ordinary computer, is configured with a camera filmingprogram and a three-primary color luminance frame matching program and can acquire the optimum matching comparison window by self-association calculation on a reference frame; three primary color image frames in a photoelectric sensor sensitive spectrum are subjected to cross-association matching calculation respectively to acquire the displacement of the corresponding primary color image frame; the displacement is averaged to be used as the instant relative displacement vector of an object, so that total displacement vector and instant speed thereof are obtained, and whether the reference frame and the optimum matching comparison window thereof are updated or not is determined according to the results, and the size of a cross-association operator array performing search matching is adjusted automatically. The accuracy of the device is less than one pixel unit, and the device has a certain capacity of ambient light interference resistance, and is advanced in technology and low in cost.

Description

technical field [0001] The invention relates to a method and device for digital image measurement, in particular to a method and device for measuring two-dimensional micro-displacement of an object by using a computer camera. Background technique [0002] The computer camera itself contains a photoelectric conversion sensor array, which provides the technical basis for measuring the displacement of the target object without contact. The recently submitted invention patent application "method and device for measuring small two-dimensional displacement using computer camera" (application number: 2009101042778) analyzed the domestic patents related to camera measurement, and inspected the 60-year-old American photoelectric detection sensor array device to detect relative motion A number of patents have proposed a method and device for measuring two-dimensional displacement by using light intensity patterns for frame-frame matching. However, this invention patent is aimed at a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02
Inventor 曾艺
Owner CHONGQING TECH & BUSINESS UNIV
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