Method, device and electronic equipment for synthesizing terrain non-characteristic areas based on parallel random sampling and propagation

Abstract

The invention provides a terrain non-characteristic region synthesis method and device based on parallel random sampling and propagation and electronic device, which relate to the technical field of image processing. The method comprises the steps of obtaining sample images, sketches and characteristic region synthesizing images, wherein the feature region synthesis map is a topographic map of thecompleted feature region synthesis and the feature region synthesis map is a topographic map of the completed feature region synthesis; cutting the sample image according to a preset grid to obtain asample block; creating a non-characteristic sample library according to the sample block; dividing the feature region composite graph into a plurality of blocks, cutting each block into a plurality of composite blocks, and processing the composite operation of each block in parallel by using random sampling and propagation; when the synthesizing operation of each block is finished, fusing the blocks to a result image and outputting the result image. The terrain non-characteristic region synthesis method and device based on parallel random sampling and propagation and the electronic device optimize the synthesis effect of the terrain non-characteristic region synthesis and improve the synthesis efficiency.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method, device and electronic equipment for synthesizing terrain non-characteristic areas based on parallel random sampling and propagation. Background technique [0002] The existing methods for synthesizing terrain non-characteristic regions all start after the synthesis of characteristic regions is completed. After the feature area synthesis is completed, a result terrain whose feature area has been synthesized but the non-feature area is blank, the non-feature area synthesis is the process of copying suitable small blocks from the sample to fill these blank areas. [0003] The existing non-characteristic region synthesis methods mainly have the following problems: [0004] First, the composite priority calculation is expensive. The non-characteristic area synthesis of the existing algorithm is carried out by continuously pasting new blocks along the boundary line...

AI Technical Summary

Problems solved by technology

Such calculations are too expensive for a terrain synthesis algorithm that pursues high efficiency, which seriously affects the synthesis efficiency.

[0005] Second, the serial synthesis method affects the synthesis efficiency

The existing non-feature region synthesis algorithm strictly obeys an unpredictable synthesis sequence, which makes the non-characteristic region synthesis be carried out in a serialized manner, resulting in a long time-consuming synthesis of non-characteristic regions

[0006] Third, the synthesis effect needs to be improved

Since the non-featured area does not contain terrain features, the existing algorithm adopts a very simple method for the calculation of the matching cost, and only calculates the noise variance and the error of the overlapping area. The results conform to the constraints of the sketch, but for the user sketch whose non-feature area is not blank, the synthetic result is difficult to fit the constraints of the sketch, because the control information of the sketch is not considered at all during the matching process

Therefore, this overly simple matching cost calculation formula cannot guarantee the synthesis effect

Images