Phase and modulation information acquisition method based on multiple two-dimensional lookup tables
A technology for modulating information and obtaining methods, which is applied in digital data information retrieval, special data processing applications, instruments, etc., can solve problems such as time-consuming and labor-consuming, narrow scope of application, and inaccurate 3D reconstruction results, and achieve time-consuming reduction, The Effect of Simplifying Complexity
Active Publication Date: 2020-06-05
SICHUAN UNIV
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[0003] In the phase calculation process of traditional phase profilometry, there is a step in the middle that requires arctangent operation and square root operation. This process is time-consuming and labor-intensive. The current solution is to record the calculation results in the look-up table in advance. In this way, the time-consuming arctangent and square root operations are avoided, but the existing algorithm can only handle the cases where the number of projections N is 3, 4, or 6, and the scope of application is narrow, and the 3D reconstruction results are not good due to the small number of projection images. accurate
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[0059] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0060] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...
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The embodiment of the invention relates to the technical field of three-dimensional modeling, and particularly provides a phase and modulation information acquisition method and device based on multiple two-dimensional lookup tables and electronic equipment. The method comprises the following steps: firstly, dividing acquired image information into specific groups, then specifically perfomring discussing according to the groups, calculating corresponding phases and modulation parameters by each group through two pre-established two-dimensional lookup tables and a compensation lookup table, andfinally, carrying out mean value fusion on each group of phases and modulation parameters. In this way, the calculation complexity is greatly simplified, and the time consumed for obtaining the phaseand modulation parameters is greatly reduced.
Description
technical field [0001] The embodiments of the present application relate to the technical field of three-dimensional modeling, and in particular, relate to a method, device and electronic equipment for acquiring phase and modulation information based on multiple two-dimensional lookup tables. Background technique [0002] Phase profilometry is an active three-dimensional measurement technique, which is widely used due to its advantages of non-contact, high speed and high measurement accuracy. The specific process is that the projector projects sinusoidal fringe patterns of different phases onto the measured object, and then the camera captures the deformed fringe pattern modulated by the measured object, and then transmits it to the calculation unit to calculate the phase information and finally calculate the three-dimensional data. [0003] In the phase calculation process of traditional phase profilometry, there is a step in the middle that requires arctangent operation an...
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IPC IPC(8): G06F16/532
CPCG06F16/532
Inventor 刘凯龚俊朱策许斌
Owner SICHUAN UNIV