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

Claim 9:
10. A correction device for free full-screen splicing, comprising 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 a 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, wherein the multiple pieces of pixel color information data are multiple pieces of brightness data or multiple pieces of chromaticity data, the multiple pieces of pixel color information data are still consistent with a curved surface form but are also locally discrete;
perform curved surface simulation based on the multiple pieces of pixel color information data to obtain a pixel color information distribution curved surface;
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;
upload the color information correction coefficients of the multiple pixels to the spliced display screen;
the processor is further configured 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 processor is further configured to determine at least one exceptional point of the spliced display screen, and eliminating influence of the at least one exceptional point; and/or determining a position of a bright/dark block of the spliced display screen, and regulating brightness of the bright/dark block, wherein the exceptional bright point is a controllable point, the exceptional dark point is an uncontrollable point;
the processor is further configured 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 processor is further configured 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.