1. [2 points] (Circle all appropriate answers) In the Canny edge detector, the number of discontinuous edges will increase by (a) increasing the hysteresis thresholding high threshold (b) decreasing the hysteresis thresholding high threshold (c) increasing the hysteresis thresholding low threshold (d) decreasing the hysteresis thresholding low threshold (e) increasing the standard deviation of the Gaussian blur kernel (f) none of the above 2. [2 points] (Circle all appropriate answers) A homography can represent the following transformations: (a) identity (b) rotation, translation and scale simultaneously (c) rotation (d) scaling (e) translation (f) mapping from straight lines to curves 3. [2 points] If you take a picture, rotate the camera about its origin and take a second picture, the transformation between points that can be observed in both views is a function of the (a) the camera focal length (b) the camera aperture size (c) the intrinsic camera parameters (d) the extrinsic camera parameters (e) the depth of the scene points (f) none of the above 4. [2 points] In which of the following scenarios can you use a weak perspective camera model for imaging a target object? (a) A person purposely passes quickly in front of your camera and then claims that they did not see you. (b) An airplane flying at a very high altitude taking photographs of the ground. (c) Taking a picture of the corner of the Lassonde building. (d) Taking a picture of the CN railway tracks located at the base of the CN tower. (e) none of the above 5. [2 points] The horizon line is horizontal in the image and located below the principal point. We can say the following about the camera's pose: (a) the camera is tilted upwards with respect to the ground plane (b) the camera is tilted downwards with respect to the ground plane (c) the camera is parallel to the ground plane (d) there is not enough information to tell how the camera is tilted