Multichannel panchromatic multispectral image compression scheduling method for address partition management
A multi-spectral image and partition management technology, which is applied in the field of multi-channel panchromatic multi-spectral image compression scheduling in address partition management, can solve the problem of different sizes, large speed differences, widths and line frequencies between panchromatic images and multi-spectral images and other issues to achieve the effect of saving hardware resource overhead, reducing power consumption, and improving utilization
Pending Publication Date: 2021-12-31
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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[0003] Load multiple channel image sensors to generate image data at the same time, and the panchromatic image and multispectral image have different line widths, line frequencies, and resolutions, resulting in different sizes and rates of panchromatic images and multispectral images.
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[0045] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0046] This embodiment provides a multi-channel full-color multi-spectral image compression scheduling method for address partition management, the flow chart of which is as follows figure 1 As shown, it specifically includes the following steps:
[0047] Step S1: According to the size of the compressed block, calculate the storage interval of each channel, set the storage base address of each channel, and use the high and low address area partition storage method for the parallel operation of reading and writ...
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The invention discloses a multi-channel panchromatic multispectral image compression scheduling method for address partition management, which comprises the following steps of: S1, calculating the address of each channel storage interval according to the size of an image partition, and caching image data by adopting a high-low address partition mode; S2, according to a write priority strategy, sequentially carrying out polling write operation according to the priority of each channel, and judging whether a write trigger signal meets a write permission condition or not; S3, when the writing condition is allowed, calculating the base address of each channel, dynamically calculating the writing addressing according to the image storage mode, wherein the writing address is the sum of the base address and the writing addressing; S4, performing polling read operation according to the priority of each channel in sequence, and judging whether the read trigger signal meets a read permission condition or not; S5, when the reading condition is allowed, calculating the base address of each channel, dynamically calculating the reading addressing according to the image storage mode, wherein the reading address is the sum of the base address and the reading addressing; and S6, accumulatively calculating the burst data volume sent into the compression chip, and starting the compression work when one image compression block is met.
Description
technical field [0001] The invention relates to the technical field of image compression, in particular to a multi-channel full-color multi-spectral image compression scheduling method for address partition management. Background technique [0002] In recent years, with the development of my country's payload technology, earth observation tasks have shown a trend of large width, multi-spectrum, and high resolution. In order to obtain a larger observation width, it is usually realized by splicing multiple channels in parallel. Earth observation spectrum usually includes panchromatic image and multispectral image. Since each channel includes panchromatic images and multi-spectral images, the amount of payload image data increases dramatically, which puts a lot of pressure on on-board storage and transmission. Image compression technology is an effective solution to solve the contradiction between large payload data and effective transmission bandwidth. means. [0003] Loadi...
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Login to View More IPC IPC(8): H04N19/176H04N19/423
CPCH04N19/176H04N19/423
Inventor 张宁伍伟朱新忠林闽佳曹旭民
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM