Description
Given an image you are asked to estimate the projection matrices of a camera (in the
imaging system). For estimating the projection matrix develop an interactive interface,
which can perform the following operations on an image.
(a) Compute the pixel coordinate of a point in an image.
(b) Compute the length in pixels between two image points.
(c) Compute the vanishing point of two parallel lines (in real world) as identified by the
user.
(d) Prepare a data file with saved correspondences of image pixel coordinates and real
world coordinates.
Using the above tool and also other associated functions as you need, form the projection
matrices (they are different!) of the following two images with the information related to
the world coordinates specified with it.
I. Name of the image:”Helipad.jpg”
Information of world coordinates: Consider the height of the vertical pillars is of 2 meters,
separated by a distance of 4 meters, and width of the road including thickness of both the
white borders is 1.5 meters.
II. Name of the image: “Palace.jpg”
Assume it is a case of affine projection, implying images of parallel lines are also parallel in
the image.
Information of world coordinates: Use a plausible world coordinate system by assuming
the walls parallel of XZ and YZ planes.
(e) Find intrinsic and extrinsic parameters for both the camera matrices.
(f) Consider the pentagonal artwork attached at the left wall (in the bottom part of the
image) showing sketches of sword and shield and having a red border. Replace all the small
windows shown at the topmost part of the walls by this artwork.
