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Subdivision rational surface (forward) depixeling technology

A subdivision surface, pixelation technology, used in image enhancement, image analysis, image data processing, etc.

Pending Publication Date: 2016-06-01
ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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Problems solved by technology

Then the next problem we face is how to determine these subdivided rational surfaces

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  • Subdivision rational surface (forward) depixeling technology
  • Subdivision rational surface (forward) depixeling technology
  • Subdivision rational surface (forward) depixeling technology

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Embodiment Construction

[0067] We have developed a program software based on DSRS technology in C language. As long as we know some parameters (such as position, rotation, CCD deformation, etc.) of the imaging instrument when taking images, we can reconstruct high-resolution source images and give more details information. Moreover, this technology can achieve image parallel processing in blocks with high multi-thread efficiency, which is a topic we are studying.

[0068] Acknowledgments: This invention is supported by the National 973 Project (No.2015CB857003, No.2015CB857000, No.2013CB834900), the National Foundation Project (No.11333008, No.11233005, No.11273061), the Outstanding Youth Project of Jiangsu Province (No.BK20140050) and the Chinese Academy of Sciences Cosmological Structure Pioneer Project (No.XDB09010000), the inventors hereby express their gratitude to these supporting projects.

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Abstract

The invention provides a subdivision rational surface (forward) depixeling technology which is the only image processing technology comprising a depixeling process so far in the field of digital image processing. The invention aims to solve the pixilated problem caused by the low sampling rate of an image equipment and solve the image shape blur caused by poor posture stability by the way. Firstly, assuming that subdivided rational surfaces can approach the brightness outline of an observed source, and then the rational surfaces are subjected to multiple times of virtual observation with the completely same condition of real observation. Finally, the virtual observation is allowed to mostly approach the real observation, and the coefficients of the subdivided rational surfaces are determined. According to the technology, a relatively basic depixeling problem is solved, and a higher image contrast and a sharper source shape can be obtained. Thus the technology has wide range of use in the fields of astronomy with very high requirement of the pixel resolution of an image and microphysics and even can be used in the field of microbiology, medicine, and digital surveillance.

Description

[0001] January 29, 2016 1 technical field [0002] In the field of digital image processing, we know that any image acquisition tool in reality has limited resolution. That is to say, the collected images cannot contain infinite detail information. Therefore, the geometric size of the image and the data storage capacity are limited. In the digital age, CCD and CMOS technologies are becoming more and more mature, and these imaging technologies are gradually replacing the old film imaging technologies. However, it should be pointed out that no matter which technique is used, it is limited by the resolution of the acquisition instrument, which includes the optical resolution of the lens or mirror and the pixel resolution of the focal plane. This paper focuses on solving the problem of pixel resolution. Taking CCD and CMOS photosensitive elements as examples, they are all composed of pixels, and each pixel has a certain size and physical characteristics, which is equivalent to ...

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Application Information

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IPC IPC(8): G06T5/00
CPCG06T2207/20016G06T5/73
Inventor 王蕾李国亮
Owner ZIJINSHAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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