Multi-channel projection fusion with automatic color balance control method

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...

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 instrument for color acquisition and measurement, and then performs color balance control through a certain algorithm, which has the advantages of simple debugging and good effect, but the special test instrument is complicated to operate and expensive

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