Multi-projecting apparatus image splicing automatic edge blending method based on fuzzy control

Abstract

The invention discloses a multi-projecting apparatus image splicing automatic edge blending method based on fuzzy control, which comprises the following steps: step 1: setting the position, number and blending zone parameter of a control point, and carrying out blending zone primary adjustment; step 2, calculating blending zone brightness difference based on machine vision to obtain a blending zone brightness variation curve; and step 3, realizing automatic adjustment of blending zone based on the fuzzy control. The invention adopts a sectional spline function, timely generates the blending curve by the mode of online fitting, has universal adaptability, and can obtain good effect even if the projecting apparatus has bigger difference. The method is easy and convenient to implement, greatly simplifies the complexity of adjustment of the edge blending, and realizes the automatic adjustment of the multi-projecting apparatus image splicing automatic edge blending on the basis of the machine visual feedback and an artificial intelligence algorithm.

Description

technical field [0001] The invention relates to multi-projection edge fusion technology, in particular to an automatic edge fusion method for multi-projector image splicing based on fuzzy control, which belongs to the field of virtual reality and intelligent control. Background technique [0002] Edge fusion technology plays a vital role in enhancing the immersion of virtual reality. With the continuous improvement of high immersion requirements in the field of virtual reality, more and more visual systems use multi-channel edge fusion to realize the performance of 3D scenes. The emergence of edge fusion technology has realized the seamless splicing of large scenes and high-resolution images, making up for the shortcomings of single-channel projection with insufficient resolution and narrow field of view, making the 3D display scene more immersive and realistic. [0003] The implementation of edge fusion technology can be divided into hardware implementation and software im...

AI Technical Summary

Problems solved by technology

However, the actual projection system is ever-changing. Even if you buy the same batch of products of the same brand and model, there will still be differences in internal parameters between projectors.

The projection system itself is a time-varying system. When the projector continues to age or encounters a large difference in the internal parameters of the projector, the symmetrical nonlinear curve based on the ideal mathematical model obviously cannot meet the demand.

[0015] (2) Parameter adjustment lacks intuitive correspondence: the current edge fusion system often relies on technicians to adjust the three parameters a, P, and G based on experience and feelings, and constantly tries to make up or estimate through continuous experience to achieve fusion. With uniform brightness effect

However, a, P, and G in the classical method cannot establish an intuitive correspondence between the brightness of a certain part of the fusion zone and the parameters that need to be adjusted due to the problems in the modeling itself, because the three parameters of the classical method do not represent the fusion zone itself. For the quantitative value of a certain segment of brightness, users cannot intuitively adjust the brightness of a certain part of the fusion band through WYSIWYG, but must use comprehensive calculations or experience to adjust the overall adjustment of the fusion band

This non-intuitive correspondence leads to the complexity and specialization of edge blending adjustment, making it difficult for non-professionals to adjust edge blending

[0016] (3) The coupling between parameters is too large, resulting in a lack of flexibility in adjustment: the coupling of adjustment parameters is too large, which is the fatal shortcoming of the classic edge fusion algorithm

For example, in practical applications, the left 1 / 4 of the fusion zone is too dark. If you use the classic method, it is basically impossible or difficult to adjust the brightness of the left 1 / 4 without affecting the display effect of other parts. Yes, because the three parameters a, P, and G are globally related parameters, adjusting any parameter will have a global impact on the fusion curve

Therefore, this strong coupling leads to complex adjustment, and it is also the fundamental reason why technicians take too long to adjust the fusion band of a specific system and the adjustment effect is not good.

[0017] (4) The edge fusion system has not realized automatic adjustment: as early as 1999, Raskar has realized the automatic geometric correction system (it is unscientific for very few scholars to mistake the automatic geometric correction system for the automatic edge fusion system), and up to now, There is still no automatic edge fusion system at home and abroad

The reasons mainly lie in the following three aspects: First, all edge fusion systems tend to use a certain form of fusion curve to achieve brightness attenuation, but do not do decoupling between adjustment parameters. It brings a lot of inconvenience; secondly, there is a lack of intuitive and effective correspondence between the parameters that need to be adjusted and the brightness effect of the fusion band, which is not conducive to the automatic adjustment of edge fusion

Third, the demand in the commercial field is insufficient. At present, the company's adjustments to edge fusion almost all rely on on-site debugging by technicians. Increase the labor cost and maintenance cost of the edge fusion system, and increase the added value of its products in disguise

Images