A Practical Calibration Method for RGB Micro-Grid Polarimetric Cameras
- URL: http://arxiv.org/abs/2208.13485v1
- Date: Mon, 29 Aug 2022 10:39:23 GMT
- Title: A Practical Calibration Method for RGB Micro-Grid Polarimetric Cameras
- Authors: Joaquin Rodriguez, Lew Lew-Yan-Voon, Renato Martins, and Olivier Morel
- Abstract summary: Polarimetric imaging has been applied in a growing number of applications in robotic vision.
RGB Polarization cameras can capture both color and polarimetric state of the light in a single snapshot.
It is crucial to calibrate these types of cameras so as to obtain correct polarization measurements.
- Score: 1.5154438803609351
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Polarimetric imaging has been applied in a growing number of applications in
robotic vision (ex. underwater navigation, glare removal, de-hazing, object
classification, and depth estimation). One can find on the market RGB
Polarization cameras that can capture both color and polarimetric state of the
light in a single snapshot. Due to the sensor's characteristic dispersion, and
the use of lenses, it is crucial to calibrate these types of cameras so as to
obtain correct polarization measurements. The calibration methods that have
been developed so far are either not adapted to this type of cameras, or they
require complex equipment and time consuming experiments in strict setups. In
this paper, we propose a new method to overcome the need for complex optical
systems to efficiently calibrate these cameras. We show that the proposed
calibration method has several advantages such as that any user can easily
calibrate the camera using a uniform, linearly polarized light source without
any a priori knowledge of its polarization state, and with a limited number of
acquisitions. We will make our calibration code publicly available.
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