Patent ID: 11961484
Assignee: XI'AN NOVASTAR TECH CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G  H

Claim 11:
12. A correction system for free full-screen splicing, comprising:
a spliced display screen;
an image collection device, configured to collect a target picture displayed on the spliced display screen to obtain a collected image, the multiple pieces of pixel color information data are still consistent with a curved surface form but are also locally discrete; and
a correction device comprises a memory and one or more processors connected with the memory, wherein the memory stores a program code, and the program code is executed by the one or more processors to:
acquire the collected image during displaying of a target picture on a spliced display screen;
perform image information processing on the collected image to acquire multiple pieces of pixel color information data of the spliced display screen;
perform curved surface simulation based on the multiple pieces of pixel color information data to obtain a pixel color information distribution curved surface, the multiple pieces of pixel color information data are still consistent with a curved surface form but are also locally discrete;
obtain multiple pieces of real pixel color information data based on the multiple pieces of pixel color information data and the pixel color information distribution curved surface;
set correction target color information data, and obtaining color information correction coefficients of multiple pixels of the spliced display screen by taking the multiple pieces of real pixel color information data as initial color information data; and
upload the color information correction coefficients of the multiple pixels to the spliced display screen;
the program code is executed by the one or more processors to: preprocess the multiple pieces of pixel color information data to obtain multiple pieces of preprocessed pixel color information data, and perform curved surface simulation based on the multiple pieces of preprocessed pixel color information data to obtain the pixel color information distribution curved surface;
the program code is executed by the one or more processors to: determine at least one exceptional point of the spliced display screen, and eliminating influence of the at least one exceptional point; and/or determine a position of a bright/dark block of the spliced display screen, and regulating brightness of the bright/dark block;
the program code is executed by the one or more processors to: sequence the multiple pieces of pixel color information data according to an order of size, determine a pixel corresponding to the pixel color information data greater than a first threshold value as an exceptional bright point, and set a median of the multiple pieces of pixel color information data as the pixel color information data of the exceptional bright point, the exceptional bright point is a controllable point, the exceptional dark point is an uncontrollable point;
the program code is executed by the one or more processors to: perform curved surface simulation by use of a smoothing method or a fitting method to obtain the pixel color information distribution curved surface; and
the program code is executed by the one or more processors to: divide the multiple pieces of preprocessed pixel color information data by data of corresponding positions in the pixel color information distribution curved surface respectively to obtain the multiple pieces of real pixel color information data, wherein influence of the pixel color information distribution curved surface is eliminated from the image data to obtain a piece of discrete real pixel brightness data.