A processing method for avoidance of graphic text in pipeline census data

Abstract

The invention discloses a method for processing pipeline census data diagram-forming character avoidance. The method comprises the steps of: inputting census data, carrying out basic correctness checking on the data and generating a basic two-dimensional diagram; framing the two-dimensional diagram according to a diagram-making scale and a framing size; calculating character-labeled boundaries and polygonal overlapping areas in framed diagrams; calculating avoidance priority according to the overlapping areas, and carrying out superposed pushing avoidance based on a sliding model in combination with a divide-and-conquer algorithm according to character objects; carrying out boundary constraint avoidance and local optimization according to the framed boundaries and character polygons; and carrying out integration and splicing on the framed data, storing new labeled position information to complete avoidance processing. According to the method, the character avoidance of a two-dimensional drawing is realized rapidly and effectively, the whole drawing is processed through static avoidance, the avoidance result does not cause error segmentation of characters in the framed diagrams, the efficiency and the accuracy of urban pipeline data diagram-forming character decoration.

Description

technical field [0001] The invention relates to a processing method for pipeline census data in urban underground space, in particular to a processing method for pipeline census data into graphics and text avoidance. Background technique [0002] Urban underground pipelines are an important infrastructure of the city, including water supply, drainage, heat, gas, electricity, telecommunications, industrial and comprehensive pipelines (corridors), etc. These pipelines are constructed and managed by multiple units. Two-dimensional drawings are important archives for the planning and design, approval, construction, completion, operation and maintenance of urban underground pipelines. Due to the large amount of data and the complexity of the situation, the text labels in the two-dimensional drawings are overlapped and squeezed, making it difficult to read. The existing text avoidance methods are based on local dynamic avoidance, and there are cases where the labels are incorrectl...

AI Technical Summary

Problems solved by technology

[0003] In order to make up for the low efficiency of existing text avoidance methods, the inability to static avoidance, and the existence of framing errors, etc., the present invention provides a processing method for text avoidance of pipeline census data, which realizes fast and effective text avoidance of two-dimensional drawings. Static avoidance processing of the whole image, and the avoidance result will not lead to wrong cutting of text in the framed image, improving the efficiency and accuracy of pipeline data into image text trimming

Images