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Object positioning method based on single-pixel detector

An object positioning and detector technology, which is applied to instruments, measuring devices, optical devices, etc., can solve the problems of real-time limitation of object positioning methods and low projection frequency, so as to achieve fast real-time positioning, improve real-time performance, and improve object positioning. The effect of positioning ability

Active Publication Date: 2018-11-27
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

However, in the Fourier single-pixel imaging system, the gray-scale spatial structure light field is used. When using digital micromirror devices for practical applications, the projection frequency is low. Therefore, the real-time performance of the object positioning method based on the Fourier slice theorem will be affected. limit

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  • Object positioning method based on single-pixel detector

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Embodiment Construction

[0029] An object localization method based on a single-pixel detector, which is based on figure 1 Shown device, a concrete example step of this method is as follows:

[0030] S1. Computer 1 generates a 256×256 two-dimensional Hadamard matrix, and extracts the row data t of each row M (L), where the value range of L is [1,256], M represents the serial number, and the value range of M is [1,256].

[0031] S2. Computer 1 constructs a two-dimensional matrix B by arranging the row data of each row according to the rows Mh , E.g, h represents the row, and the same construction operation is performed on the 256 row data in the two-dimensional Hadamard matrix to obtain 256 two-dimensional matrix B Mh Form two-dimensional matrix group; for two-dimensional matrix B Mh Perform transposition to obtain a two-dimensional matrix B Mν , ν represents the column, that is After transposing 256 rows of data, perform the same construction operation to obtain 256 two-dimensional matrix B ...

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Abstract

The invention discloses an object positioning method based on a single-pixel detector. The method comprises steps of through a computer, generating a two-dimensional Hadamard matrix; acquiring line-arranged and row-arranged two-dimensional projection patterns; allowing the line-arranged two-dimensional projection patterns and the row-arranged two-dimensional projection patterns to pass a light modulator and a projection system; irradiating the object through a lighting optical field and acquiring a light intensity signal response value, thereby using the light intensity signal response value and line data to carry out calculation; acquiring accumulation distribution curves in the line and row directions of the object image; and carrying out threshold value processing on the curves to acquire the position of the object in the scene. The method is advantageous in that by through fusion single-pixel imaging technology, positioning of the object is achieved; the system is free from a scanning device; by use of a single-pixel detector, cost and complexity of the system can be effectively reduced; and the object positioning ability in case of weak signals can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of object detection, in particular to an object positioning method based on a single-pixel detector. Background technique [0002] The most important source of information in human production and life is images, and imaging detection methods are a major way to obtain images. Single-pixel imaging technology is a technology that is essentially different from traditional imaging technology in imaging mechanism, because it has some unique advantages, it has attracted people's attention. Single-pixel imaging technology uses a detector without spatial resolution (such as a photomultiplier tube) to perform multiple sampling in time to achieve imaging of the target object. The single-pixel imaging technology originated from the ghost imaging technology using the quantum entanglement effect, and later developed the single-pixel ghost imaging technology using thermal light. Since the single-pixel imaging technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/25G01B11/00
CPCG01B11/002G01B11/254
Inventor 时东锋王英俭黄见苑克娥
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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