Adaptive region projection based single pixel imaging method

An imaging method and single-pixel technology, applied in image analysis, image data processing, measurement devices, etc., can solve problems such as constraints, large imaging time consumption, large time consumption, etc. effect of speed

Active Publication Date: 2018-12-25
BEIHANG UNIV
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Problems solved by technology

However, for the existing single-pixel imaging method, since the hardware equipment in the imaging system usually remains unchanged, the projection rate of the stripes remains unchanged, so the imaging time is proportional to the imaging resolution
Single-pixel imaging requires a large number of fringes to be cast for a sharp image, which means that projecting these fringes takes a lot of time
The high consumption of imaging time has become a key problem restricting the application of single-pixel imaging technology

Method used

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Embodiment Construction

[0027] imaging system such as figure 2 As shown, the imaging system is composed of a stripe projector (2), a single-pixel detector (3) and a computer (1). The implementation flow chart of the present invention is as figure 1 As shown, the horizontal and vertical sinusoidal stripes are first projected to the object by the stripe projector, such as figure 2 (4) shown. Then obtain the two-dimensional Fourier coefficients of the scene image on the horizontal and vertical axes in the Fourier domain, image 3 As shown in (4); then using the principle of Fourier slicing, the obtained Fourier coefficients on the horizontal and vertical axes are respectively subjected to one-dimensional Fourier inverse transform, and then the scene image is projected on the horizontal and vertical axes in the image domain, such as image 3 (3) and image 3 (4); Then use the proposed region positioning algorithm to locate the position and size of the object region in the scene imaging image, such ...

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Abstract

Disclosed is an adaptive region projection based single pixel imaging method which is used for improving the speed of signal pixel imaging. The method includes the following steps: firstly, projectingtransverse and longitudinal sinusoidal fringes onto an object by using a fringe projector to obtain a two-dimensional Fourier coefficient of a required scene image; secondly, obtaining projection ofthe scene image on axes of abscissas and ordinates in an image domain based on a Fourier slice principle; thirdly, determining the size and position of an object region in a scene by using an edge extraction algorithm; and carrying out the signal pixel imaging on the region where the objected is located, and reconstructing an image of the object. The method can automatically adjust the position and size of the imaging region according to the size of the object region, thereby reducing the imaging time and greatly improving the imaging speed without changing the imaging quality.

Description

technical field [0001] The invention relates to a single-pixel imaging method based on adaptive area projection, which can perform fast single-pixel imaging on an object when the object only occupies a part of the imaging scene, shortens the single-pixel imaging time, and improves the imaging speed. The present invention is in the field of computational imaging. Background technique [0002] Unlike ordinary CCD cameras that require a large number of pixels to record the spatial characteristics of the imaging scene, single-pixel imaging technology can image the scene with only one pixel, and can still obtain better quality images in complex imaging environments. During the implementation of single-pixel imaging, a large number of known fringes need to be projected to the measured area, the reflected light is detected and sensed by the single-pixel detector, and finally the image of the imaged area is reconstructed using the corresponding reconstruction algorithm using the obt...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/521G06T17/00G01B11/00G01B11/24G01B11/25
CPCG06T7/521G06T17/00G01B11/00G01B11/2441G01B11/25G01B11/254
Inventor 姜宏志赵慧洁朱曙光刘颢
Owner BEIHANG UNIV
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