Photogrammetry and 3D Computer Vision

Photogrammetry and 3D computer vision aim at recovering the structure of real-world objects/scenes from images. This course is about the theories, methodologies, and techniques of 3D computer vision for the built environment. In the term of this course, students will learn the basic knowledge and algorithms in 3D computer vision through a series of lectures, reading materials, lab exercises, and group assignments. The topics cover the whole pipeline of reconstructing 3D models from images:

- Cameras models: how 3D points from the real world get projected onto the image plane and how to recover the camera parameters from a set of observations;

- Epipolar geometry: the geometric relations between corresponding image points;

- Image matching: define and match image features to establish correspondences between images;

- Structure from motion: recover/refine geometry and camera parameters from a set of images;

- Multi-view stereo for recovering dense geometry (e.g., point clouds) from images;

- Surface reconstruction: obtain 3D surface models of real-world objects from point clouds.

The assessment of this course consists of three group assignments and the final written exam. The final grade is based on the evaluation of both the assignments and the final exam:

- Group assignments (40%). All assignments have equal weight in the final grade. It is possible to resubmit your work after incorporating the feedback/suggestions received from the teachers. However, the evaluation of an assignment is mainly based on the first submission. Students who have improved their work may receive a slightly higher grade depending on the significance of the improvement (but no more than 5%). Assignments submitted after the deadline: the grade will be deducted with 10% per day late, and not accepted after 3 days late.

- Final exam (60%). The final exam consists of multiple-choice questions and open questions. Example questions will be given two weeks before the exam.

To pass the course, all assignments and the final exam must be graded greater or equal to 5.5. A total of 5.75 or above is required to pass the course.

Repair and retake options: any component of the assessment graded lower than 5.75 is eligible for one more opportunity to retake (for the exam) or repair (for assignments). A repair is a revision or addition to an existing assignment, and a successful repair will only be assessed with a 6.0. A retake is an entirely new examination.