DOM local repair polymerization method with balanced and non-deformable colors

Abstract

The invention provides a DOM local repair polymerization method with balanced and non-deformable colors. The influence of the boundary on the aggregated image is fully considered; in order to ensure that the foreground color is distortionless, the foreground and the background are optimally sewed, and the background color and structure are kept relatively complete. Three boundaries including a foreground fixed boundary, an optimal splicing line and a background fixed boundary are sequentially extracted; the method is characterized in that three boundaries are taken as contour lines, discrete points are constructed into an irregular triangulation network with constraints, and then weight value interpolation is carried out on the irregular triangulation network for obtaining a smooth weightvalue in the transition connection area; the aggregation result fully shows that the method can effectively improve the defects of color bleeding effect, color distortion and the like of the DOM, smooth transition is achieved, and deformation and color imbalance areas in the image can be effectively repaired.

Description

technical field [0001] The invention relates to a DOM local repair aggregation method, in particular to a DOM partial repair aggregation method with color balance and no deformation, and belongs to the technical field of DOM partial repair. Background technique [0002] Digital orthophoto DOM is an important part of basic geographic information products. It has the advantages of rich information, high precision, strong reality, intuitive and vivid, etc. It can be used as a background control to evaluate the reality, accuracy, and integrity of other data, and also Natural and cultural information can be extracted from it, and new information and products can be derived to provide good data means for the revision and update of topographic maps, and are widely used in urban planning, digital surveying and mapping, tourism navigation, resource investigation, disaster monitoring, land use, etc. field. [0003] DOM uses the image on the orthographic projection aerial photo to rep...

AI Technical Summary

Problems solved by technology

[0018] Aiming at the deficiencies of the prior art, the DOM partial restoration and aggregation method with color balance and no deformation provided by the present invention recognizes the image as a linear combination of the foreground image and the background image, and fully considers the influence of the boundary on the aggregated image, in order to ensure The foreground color is not distorted, the foreground and background are optimally stitched, and the background color and structure remain relatively complete. The present invention sequentially extracts three boundaries: the fixed boundary of the foreground, the best splicing line, and the fixed boundary of the background, and the transition is composed of the two outermost boundaries. In the handover area, for the acquisition of the smooth weight value in the transitional handover area, the present invention regards the three boundaries as contour lines, and defines the weight values ​​as 0, 0.5, and 1 respectively, and then constructs the discrete points into irregular triangles with constraints network, and then carry out the method of weight value interpolation; finally, through several groups of comparative experiments based on the aggregation of ordinary images, the aggregation results fully demonstrate that the method of the present invention can effectively improve the shortcomings of DOM such as color bleeding and color distortion, and achieve smooth transition. Ability to effectively repair distortion and color imbalanced areas in images

Images