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Virtual reimaging image generation method

A virtual pixel and image technology, applied in the field of virtual reimaging image generation, can solve the problems of virtual reimaging image missing pixels, loss of image precision, etc.

Pending Publication Date: 2022-01-28
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

When using virtual re-imaging to calibrate satellite remote sensing image sensors, the direct method is often used for image generation for the sake of computational efficiency. In the process of image generation using the direct method, the nearest neighbor pixel method is generally used for processing. However, the above processing method will cause missing pixels or loss of image precision in the generated virtual reimaging image due to rounding errors

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Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "...

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Abstract

The embodiment of the invention relates to a virtual reimaging image generation method. The method comprises the following steps: calculating geometric positioning parameters of a virtual reimaging image according to related parameters of an original image; carrying out gray projection on each original pixel point in the original image, and calculating related parameters of corresponding virtual pixel points ; performing inverse distance weight interpolation calculation on at least one part of virtual pixel points to obtain target gray values of the corresponding virtual pixel points; outputting the virtual reimaging image according to the target gray value; weighting the gray value of the projection of the virtual reimaging image and the distance relation between each pixel point and the nearest integer pixel point in the virtual reimaging according to the original image; and calculating the target gray value to correct the original gray value so as to at least partially solve the pixel missing or image precision loss of the generated virtual reimaging image caused by the rounding error.

Description

technical field [0001] Embodiments of the present invention relate to an image processing method for an optical satellite remote sensing image, and in particular to a method for generating a virtual reimaging image suitable for processing an optical satellite remote sensing image. Background technique [0002] At present, the correction of satellite remote sensing image sensors is generally completed through direct image square stitching or virtual re-imaging technology. When using virtual re-imaging to calibrate satellite remote sensing image sensors, the direct method is often used for image generation for the sake of computational efficiency. In the process of image generation using the direct method, the nearest neighbor pixel method is generally used for processing. However, the above-mentioned processing method may cause missing pixels or loss of image precision in the generated virtual reimaging image due to rounding errors. Contents of the invention [0003] In vi...

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Application Information

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IPC IPC(8): G06T11/00
CPCG06T11/005G06T2207/10032
Inventor 许殊陈勃李山山黄鹏李安张洪群石璐吴业炜刘璐娇
Owner AEROSPACE INFORMATION RES INST CAS
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