Rapid display method and system for ultra-large-scale remote sensing images
By adding data to the end of the ROM address to build an image pyramid and loading only image blocks within the display window, the problem of low display efficiency of ultra-large format remote sensing images is solved, and the effect of fast loading and efficient scaling is achieved.
CN117648067BActive Publication Date: 2025-03-25WUHAN UNIV
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Patent Information
- Application Number
- CN202311605945.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-29
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2043-11-29
AI Technical Summary
Technical Problem
The prior art is difficult to efficiently display and process ultra-large-format remote sensing images, resulting in slow loading speed, poor scaling and roaming experience, and high occupancy of computer resources.
Method used
The image pyramid is built by appending data at the end of the ROM address of the original image, and only the image blocks within the display window are loaded into the RAM to achieve rapid display and zooming.
Benefits of technology
Reduces RAM usage, avoids lag, improves the display efficiency of ultra-large format remote sensing images, and does not generate additional pyramid files.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides a method and system for fast display of ultra-large-scale remote sensing images, which are characterized by: creating an image pyramid, including defining a pyramid image resampling list, and constructing an image pyramid by appending data at the end of the ROM address of an input image; constructing and initializing a display view, including obtaining screen physical information, creating an empty display view, and initializing the display view with the topmost pyramid image; constructing a tile index, including constructing an index for all tiles in the pyramid of the layer where the display view is located, and judging whether the tile is in the display view area, if so, continuing to execute, otherwise not refreshing the display view; loading an image block, including loading the corresponding image block in ROM into RAM according to the tile index information; refreshing the display view, including refreshing the corresponding area of the display view corresponding to the tile index information with the image block in RAM. The present invention can realize the efficient construction and fast display of the pyramid image of ultra-large-scale remote sensing images.
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