A multi-resolution image display method based on staggered grid

Abstract

The invention discloses an image multi-resolution display method based on staggered grids. By using the staggered grids, three types of staggered grid image tile pyramids are established on the basis of traditional image tile pyramids, and according to the actual display Select the corresponding image tile pyramid for loading and display; it mainly includes the following steps: design the image pyramid level and tile size; make the Gaussian pyramid of the original image; establish a traditional image tile pyramid; use the staggered grid method to establish an interlaced network Grid image tile pyramid; calculate and select the image pyramid type index and tile row and column number; load the corresponding tile for display according to the tile type index and row and column number. Compared with the existing display method, this method reduces the memory overhead of the system, improves the image loading speed, and controls the number of tiles loaded on the screen to no more than four, ensuring the stability of the memory usage.

Description

technical field [0001] The invention relates to an image display method, in particular to an image multi-resolution display method based on an interlaced grid. Background technique [0002] High-resolution large-scale images often have a very large amount of data, which can reach the GB level. Displaying it directly will take up a lot of memory resources, and the loading time is long and the operation speed is slow. A common display method for this type of image data is to process the original data, create an image pyramid tile file, and load the corresponding tile according to the position of the viewpoint during the display process for display. However, there are several problems in the actual display process: [0003] 1. The image is segmented by the traditional segmentation method, and the size of the obtained tiles is often larger than the screen size, so that the maximum number of tiles that need to be loaded on the screen is 4. However, the data volume of a single ...

AI Technical Summary

Problems solved by technology

However, the data volume of a single tile is still large, and there is still room for improvement in the pursuit of extreme speed

[0004] 2. If the tile size is set to be slightly smaller than the screen size, the number of tiles that need to be loaded at different viewpoints varies greatly due to the influence of the viewpoint position and the tile division method

For mobile devices with limited memory resources, the stability of memory usage and image loading speed cannot be guaranteed

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