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Laser scanning image distortion correction method, device and system

A technology for image distortion correction and laser scanning, which is applied in image communication, parts of TV systems, and image reproducers using projection devices, etc. The effect of correcting efficiency and improving the degree of integration

Inactive Publication Date: 2016-10-05
合肥疆程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for correcting laser scanning image distortion, aiming at solving the problem that existing laser projectors need to use correction hardware to complete image distortion correction when scanning images, and the correction efficiency is low, which is not conducive to laser projectors. high integration problem

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  • Laser scanning image distortion correction method, device and system
  • Laser scanning image distortion correction method, device and system
  • Laser scanning image distortion correction method, device and system

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Embodiment 1

[0030] figure 1 It is an implementation flowchart of the laser scanning image distortion correction method provided by the embodiment of the present invention, which is described in detail as follows:

[0031] In step S101, an image signal is received and decoded, and an image to be projected is decoded from the image signal;

[0032] The image signal is received and decoded, and after the image is decoded, the image cache module is stored.

[0033] In step S102, using a pre-configured distortion correction model to correct the coordinates of the image;

[0034] Using a pre-configured distortion correction model, the position of the image on the projected coordinate system is adjusted to correct the coordinates of the image.

[0035] Before step S102, a distortion correction model is configured. The distortion correction model is:

[0036] X = k · x p δ x ...

Embodiment 2

[0045] figure 2 It is the implementation flowchart of Step S103 of the laser scanning image distortion correction method provided by the embodiment of the present invention, which is described in detail as follows:

[0046] In step S201, the position information of the vibrating mirror is used to generate a compensation phase;

[0047] In step S202, the image is corrected according to the corrected coordinates of the image and the compensation phase to generate a corrected image.

[0048] In the embodiment of the present invention, according to the corrected coordinates of the image and the compensation phase, the image is corrected accurately, and the parameters can be adjusted flexibly, which is simple and practical, thus not only improving the correction efficiency, but also improving the laser The degree of integration of the projector.

Embodiment 3

[0050] image 3 It is the implementation flowchart of step S104 of the laser scanning image distortion correction method provided by the embodiment of the present invention, which is described in detail as follows:

[0051] In step S301, the corrected image is sent to the driver chip;

[0052] In step S302, the driver chip drives the laser tube to emit light, and converts the electrical signal into an optical signal;

[0053] In step S303, the optical device synthesizes the optical signal, and the synthesized optical signal is reflected by the vibrating mirror to project an image.

[0054] In the embodiment of the present invention, the synthesized optical signal is reflected by the galvanometer to project an image. Since the image has been corrected, an undistorted image can also be projected without correction hardware, thereby improving Improve the calibration efficiency, but also improve the integration of laser projectors.

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Abstract

The invention is applied to the field of laser micro projection and provides a laser scanning image distortion correction method, a device and a system. The method comprises a step of receiving an image signal and decoding the image signal, and obtaining an image to be projected through decoding in the image signal, a step of correcting the coordinate of the image by using a pre-configured distortion correction model, a step of obtaining the position information of an oscillating mirror in real time, a step of generating a corrected image according to the coordinate of the corrected image and the position information of the oscillating mirror, and a step of projecting the corrected image. According to the laser scanning image distortion correction method, the device and the system, the problem that the image distortion correction needs a correction hardware when an existing laser projector scans an image, the correction efficiency is low, and the high integration of a laser projector is not facilitated is solved. In the condition of normally using an existing laser projector, the image can be rapidly corrected, thus the correction efficiency is improved, and the integrated degree of the laser projector is improved.

Description

technical field [0001] The invention belongs to the field of laser micro-projection, and in particular relates to a laser scanning image distortion correction method, device and system. Background technique [0002] Laser projectors use laser beams to transmit images, which can fully display the visual shock brought by the deep color (DeepColor) of HDMI 1.3. In addition, the laser projector scans the image to be projected through the galvanometer. Therefore, the image scanned by the galvanometer will directly affect the image quality projected by the laser projector. [0003] However, existing laser projectors need to use correction hardware to complete image distortion correction when scanning images. The correction efficiency is low, which is not conducive to the high integration of laser projectors. The reason is that the existing laser projector needs to correct the hardware to reduce the inherent geometric distortion of the image scanned by the galvanometer. However,...

Claims

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Application Information

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IPC IPC(8): H04N5/74H04N9/31
Inventor 吕江婷朱璐康栋
Owner 合肥疆程技术有限公司