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A multispectral multi-camera module calibration method
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A multi-camera and calibration method technology, applied in the field of photography, can solve the problems of difficult light switch adjustment, unfavorable production line operation, high production cost, etc., and achieve the effects of high light source utilization, convenient operation, and low cost
Active Publication Date: 2020-02-14
TRULY OPTO ELECTRONICS
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[0004] When calibrating a multi-spectral multi-camera module, different cameras need to be calibrated under different bands of light. The existing practice is to integrate LED lights of different bands into the same light source and switch them by switching the LED lights. The band of the light source, however, if so many LED lights of different bands are integrated into the same light source, the cost will inevitably be high, and as long as one of the LED lights is broken, the entire light source cannot be used, resulting in higher production costs. The more, the more difficult it is to switch and adjust the light, which is not conducive to the operation of the production line
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Embodiment 1
[0030] Such as figure 1 and 4 As shown, a calibration method of a multi-spectral multi-camera module 1, the multi-camera module 1 includes at least two cameras, and different cameras are used to obtain spectral information of different bands; the calibration method includes the following steps:
[0031] Step 1: Provide a light source, a multi-camera module 1 and a filter set, the filter set includes at least two filters 2, and the wavelength bands of the filter 2 correspond to the wavelength bands of the camera;
[0032] In this step, the filter set is pre-customized according to the wavelength bands of the cameras of the multi-camera module to be calibrated.
[0033] And realize the switching of the filter 2.
[0034] In this embodiment, the multi-camera module 1 is described as an example with a red light camera, a green light camera and a blue light camera. Correspondingly, the filter set includes a red light filter 2, a green light filter Sheet 2 and Blue Light Filter 2...
Embodiment 2
[0059] Such as Figure 4 As shown, a calibration system of a multi-spectral multi-camera module 1, the multi-camera module 1 includes at least two cameras, and different cameras are used to obtain spectral information of different bands; the calibration system includes a light source device, a calibration device and filter set, where:
[0060] The light source device includes a light source for providing calibration light for the multi-camera module 1 during calibration and burning;
[0061] The calibration device is electrically connected to the multi-camera module 1, and is used to control the multi-camera module 1 to perform calibration and burning under different filters 2 of the filter group;
[0062] The optical filter set includes at least two optical filters 2, the wavelength bands of the optical filters 2 correspond to the wavelength bands of the camera, and they are located between the multi-camera module 1 and the light source during calibration and burning;
[00...
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Abstract
The invention discloses a multi-spectral multi-camera module calibration method, and the method comprises: step 1, providing a light source, a multi-camera module and a light filter group, wherein thelight filter group comprises at least two light filters, the wave bands of the light filters and the wave bands of the cameras are in one-to-one correspondence; step 2, placing the multi-camera module in the light source; step 3, placing one optical filter between the multi-camera module and the light source, and switching the different light filters to enable the multi-camera module to be subjected to calibration burning under the different light filters. The calibration method has the advantages of being low in cost, high in operability and high in light source utilization rate.
Description
technical field [0001] The invention relates to the field of imaging, in particular to a calibration method for a multi-spectral multi-camera module. Background technique [0002] Integrating a single camera on a smart device is already difficult to meet people's needs. Multi-camera modules that combine different functions of multiple cameras to complete complex tasks are bound to appear on more and more smart devices. The multi-camera module is composed of multiple cameras that cooperate with each other to achieve specific functions by synthesizing the images acquired by different cameras. The consistency requirements of each camera are high, so each camera needs to be calibrated before leaving the factory to improve consistency. [0003] The multi-spectral multi-camera module is a small multi-spectral imagingsystem based on multi-spectral imaging technology, which has great application prospects in smart devices. The multi-camera module uses multiple cameras to obtain sp...
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