This tool helps you verify how well is estimated relative motion between two or more images by testing if the projected ray-of-sight passes through correct image points.
Open two or more images in the 2D view. Move above the images with the mouse cursor. RealityCapture will render a ray-of-sight starting at the camera center, passing through the tip of the mouse cursor. The ray is projected to neighboring views and distorted. Points of rays must pass through the same physical objects. If they are not, use control points to tighten the scene.