Rapid seamless splicing display method for electronic chart

The invention relates to a rapid seamless splicing display method for an electronic chart. The method comprises the following steps: step 1, adding points, lines and planes of public objects of adjacent map sheets into generated electronic chart data of a system for identification; step 2, identifyi...

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Bibliographic Details
Main Authors DONG JINFA, ZHAO YAN, YU XIAOLONG, ZHANG JINGJING, YUAN RUBIN, ZHANG YONGBING
Format Patent
LanguageChinese
English
Published 07.01.2022
Subjects
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Summary:The invention relates to a rapid seamless splicing display method for an electronic chart. The method comprises the following steps: step 1, adding points, lines and planes of public objects of adjacent map sheets into generated electronic chart data of a system for identification; step 2, identifying the affiliation relationship between points, lines and planes in the conditional symbolization process; step 3, establishing an electronic chart index; step 4, quickly retrieving the chart data overlapped with the screen area; step 5, retaining the chart data in the screen range; step 6, performing data organization on the chart data in the screen range; and 7, completing rapid seamless splicing of the electronic nautical charts and rapid drawing display of chart data. According to the method, retrieval, cutting and splicing processing can be rapidly carried out, and a caching mechanism is combined in the later period, so that the display speed of the electronic chart is greatly improved, and the user operation
Bibliography:Application Number: CN202110025158