Camera not working right after reikan focal

However, one of the constraints in most of these photogrammetric calibration methods is using common or similar field-of-view (FOV) cameras. In contrary, self-calibration is performed by extracting feature points and processing correspondences between captured images of a static scene. Photogrammetric calibration is performed by observing a calibration object (normally a checkerboard pattern) whose geometry in the 3D space is known for the best precision. As mentioned in, these calibration methods can be divided into two broad categories: photogrammetric calibration and self-calibration. Much related work have been introduced throughout the past few decades, initially starting in the photogrammetry community. It is considered as the first and foremost important step in many 2D/3D stereo vision experiments. The process of estimating internal-external (also known as intrinsic and extrinsic) camera parameters and knowing the correct relative pose between cameras in a stereo setup has been of the interest in the computer vision field for many years. Experimental results show that the second method is more accurate than the first one. We analyze the robustness of these two approaches by comparing reprojection errors and image rectification results. In the second approach, we calculate a planar homography transformation to identify common object points in left-right image pairs and treat them with the well-known Zhangs camera calibration method. We use these two transformation matrices to estimate the relative pose of the right camera by multiplying the inversed left transformation with the right. In our first approach, we consider the checkerboard pattern as the world coordinate system and calculate left and right transformation matrices corresponding to it. In both approaches, we split the captured stereo images into RGB channels and extract R and inverted G channels from left and right camera images, respectively. Instead of using a conventional black-white checkerboard pattern, we design an embedded checkerboard pattern by combining two differently colored patterns. We present two simple approaches to calibrate a stereo camera setup with heterogeneous lenses: a wide-angle fish-eye lens and a narrow-angle lens in left and right sides, respectively.

Camera not working right after reikan focal