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Weighted sampling method and a weight factor optimization method oriented to large-area-array small-pixel component

A technology of weighting factor and large area array, applied in electrical components, image communication, components of color TV, etc., to achieve the effect of good imaging quality, reduction of system aperture, and reduction of system cost

Pending Publication Date: 2021-11-05
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

[0007] The technical problem solved by the present invention is to solve the problem of optical remote sensing imaging with high resolution and high signal-to-noise ratio, and provide a weighted sampling method and weight factor optimization method based on large area array and small image components

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  • Weighted sampling method and a weight factor optimization method oriented to large-area-array small-pixel component
  • Weighted sampling method and a weight factor optimization method oriented to large-area-array small-pixel component
  • Weighted sampling method and a weight factor optimization method oriented to large-area-array small-pixel component

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Embodiment Construction

[0047] The present invention will be further elaborated below in conjunction with embodiment.

[0048] A new sampling method for large area array and small image components, based on the weighted sampling superposition method to achieve a novel system to achieve more flexible and higher system performance indicators; a weight factor optimization method suitable for weighted sampling method, through Construct the weight optimization objective function and constraints to realize the optimal setting of weight factors. Specifically include the following steps:

[0049] Step 1: The detector adopts a small-pixel high-pixel area array CMOS device with a pixel pitch of p and a pixel size of N×N. Each L×L pixel is regarded as a block B, where N is an integer multiple of L , the total number of blocks is K, K=(N / L) 2 . L is generally set to an odd number.

[0050] Step 2: If figure 1 As shown, for the kth block B k The L×L pixels set different weight factors, the weight factor dis...

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Abstract

The invention relates to a weighted sampling method and a weight factor optimization method oriented to a large-area-array small-pixel component, based on a large-area-array small-pixel imaging device and compared with a traditional multi-pixel combination method, different weights are set for different sub-pixels, the different sub-pixels are subjected to weighted combination, and meanwhile, in order to solve the problem of weight factor setting, the weight factor of the pixel is set as a variable, an optimization objective function of the weight factor is constructed, and optimization design is performed on the weight factor. The advantages of a small-pixel imaging device are fully explored, the SNR and the MTF of the imaging system can be comprehensively considered, and better imaging quality is obtained.

Description

technical field [0001] The invention belongs to the technical field of photoelectric imaging, and relates to a novel sampling method based on a large area array and small pixel optical detection device. Background technique [0002] The optical remote sensing imaging system includes optical lenses, detectors, electronic systems, etc. The system MTF and SNR are one of the important indicators of the remote sensing imaging system. reduction can be increased. [0003] With the continuous development of detector technology, high-pixel and small-pixel-size device technologies continue to emerge. The pixel size of the detector reaches the sub-micron level, and the pixel size reaches 100 million or even hundreds of millions. However, as the pixel size of the detector shrinks, the SNR of the detector decreases, and it is difficult to meet the SNR requirements of space remote sensing imaging. In the field of commercial mobile phone sensors, based on multi-pixel integration, such as...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/374
CPCH04N25/76
Inventor 庄绪霞阮宁娟魏久哲王世涛贺金平邹宝成胡嘉宁刘晓林王跃陈伟
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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