Multichannel projection fusion band color automatic balance control method

A technology of automatic balance and control method, applied in the direction of using the image reproducer of the projection device, color TV, image communication, etc., can solve the problems of high cost, simple debugging process, difficult control of the effect, etc. Effect

Active Publication Date: 2017-04-05
ZHENGZHOU J&T HI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual adjustment is mainly carried out by predefining the fusion curve function and adjusting parameters. The debugging process is simple but the effect is not easy to control
Automatic adjustment generally uses a camera or a special test instru

Method used

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  • Multichannel projection fusion band color automatic balance control method
  • Multichannel projection fusion band color automatic balance control method
  • Multichannel projection fusion band color automatic balance control method

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Embodiment Construction

[0031] In conjunction with the accompanying drawings, the present invention is further described in detail through embodiments.

[0032] This embodiment utilizes the open source computer vision library opencv (computer vision development library) on the windows operating system to capture the projection image by obtaining the camera, detect the fusion zone anchor point to determine the fusion zone range and averagely sample the projection brightness value within the fusion zone range , iteratively corrects the fusion map through the dichotomy correction method, so that the color of the fusion zone and the color of other non-fusion zone regions tend to be consistent gradually to achieve the purpose of color balance.

[0033] The fusion zone color automatic balance control method based on an ordinary network camera described in this embodiment assumes that before performing the fusion zone color balance process, links such as surface correction and projector color correction have...

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Abstract

The invention relates to a multichannel projection fusion band color automatic balance control method based on image recognition. The method includes following steps: setting a camera to be aligned with a fusion band area, fixing the posture to remain stable, and connecting the camera to a computer; and setting a fusion band transverse sampling point number N, setting a fusion band curve sampling point initial value to enable the fusion band brightness change to be linear change, projecting a synthesis image including a fusion band positioning picture and a white picture background and a fusion picture, acquiring a projection image picture by the camera through opencv, recognizing fusion band locating point area coordinates, recognizing a locating fusion band area, finding a fusion band transverse center line, dividing the center line into N equal parts, obtaining the difference between the brightness of each equal-dividing point and the brightness of the start point of the center line, calculating a fusion band control point correction value by employing a progressive bisection method, updating a projection fusion image, repeating the above steps until all control point differences are less than a specific difference threshold, and ending color adjustment of the fusion band. According to the method, the fusion picture is corrected by employing the progressive bisection correction method to achieve color balance, automatic processing is realized without artificial intervention, the obtaining of equipment is easy, and the effect is good.

Description

technical field [0001] The invention belongs to the technical field of virtual reality multi-channel projection display, and specifically relates to an image recognition-based multi-channel projection fusion with color automatic balance control method that is simple to use, low in equipment cost, easy to obtain, and good in effect, and is suitable for large-screen, multi-channel Super large venues with specific requirements such as color, high brightness, and high resolution. Background technique [0002] Projection multi-channel fusion refers to the fusion of the projection images of two or more projectors on one screen to achieve an overall larger image enhancement effect, which can be applied to command and monitoring centers, network management centers, video conferencing, academic reports, technical Large venues such as lectures and multi-functional meeting rooms. Projection image fusion is a data fusion technology with digital images as the main content. It is a combi...

Claims

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Application Information

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IPC IPC(8): H04N9/31H04N5/265
CPCH04N5/265H04N9/3147H04N9/3182
Inventor 赵明玥张安全朱运兰张二阳
Owner ZHENGZHOU J&T HI TECH
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