Binary coding disc and tomography system adopting binary coding disc

Abstract

The invention provides a tomography system, which comprises a cylindrical mirror, a light modulation disc, a convergent lens and a dot matrix detector, wherein the light modulation disc comprises a disc, the disc is divided into a plurality of circular ring areas from inside to outside, the circle centers of the circular ring areas coincide with the circle center of the disc, fan-shaped holes are formed in the circular ring areas in the circumferential direction, the sum of the circle center angles corresponding to all the fan-shaped holes in the circular ring area serves as the light flux angle of the circular ring area, and the light flux angles of the circular ring areas form a geometric progression with a common ratio of 2. According to the system, the dot matrix detector can be used for detecting optical signals, so that the system cost is reduced; and by means of the tomography principle, the imaging quality and the extremely high signal-to-noise ratio can still be guaranteed under the single-pixel condition.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a binary code disk and a tomographic imaging system using the binary code disk. Background technique [0002] Obtaining useful signals from background noise and being able to image is the focus of research in recent years, and the principle of tomography is widely used in image processing. Existing tomography systems mostly use area array detectors, or a combination of cylindrical mirror and line array detection. The integrated circuits of area array detectors and linear array detectors are complex, relatively difficult to integrate, and costly. Therefore, in the existing tomography imaging, after compressing the two-dimensional light beam into a one-dimensional optical signal with a cylindrical mirror, the linear reciprocating motion of a dot matrix detector (that is, a single-pixel detector) is used to collect the one-dimensional optical signal. Since the dot matrix detector c...

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Problems solved by technology

[0003] In order to solve the defect of high construction cost of the tomographic imaging system in the prior art, the present invention proposes a binary coded disk and a tomographic imaging system using the binary coded disk, which can be performed by a dot matrix detector in a static state. The acquisition of optical signals reduces the high construction cost of the intraoperative tomography system and ensures the quality of imaging

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