Classical Computer Vision

Non-deep-learning computer vision: geometry, image processing, and classical detection.


foundation tier

Classical Computer Vision addresses non-deep-learning computer vision: geometry, image processing, and classical detection. It sits within Graphics and Vision and inherits that area’s core questions about correctness, scale, and tractability. This page surveys the conceptual axes of the topic and points to the references that frame ongoing research and teaching. The intent is to be useful both as an entry point for newcomers and as an index for practitioners cross-checking their mental model against the field’s primary sources.

Work on classical computer vision can be organised around a few interlocking concerns: the formal objects under study, the algorithms or systems that compute over them, the resource trade-offs (time, memory, communication, statistical efficiency), and the empirical or theoretical guarantees that practitioners rely on. The sources cited below approach the topic from a mix of these angles.

Foundational references

Szeliski, Computer Vision: Algorithms and Applications (2022) is a standard reference for this material and is used both as a curriculum anchor and as a long-form survey of techniques. Hartley, Multiple View Geometry in Computer Vision (2004) is a standard reference for this material and is used both as a curriculum anchor and as a long-form survey of techniques.

Open methodological questions in classical computer vision cluster around how to compose the techniques above under realistic constraints — scale, adversarial inputs, partial observability, and shifting workloads. The cited references give the precise statements, proofs, and empirical evaluations that this overview only sketches; downstream topic pages drill into specific subfields.

Prerequisites

Sources

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  1. 01

    Image Processing

    Filtering, edges, morphology, and frequency-domain methods.

  2. 02

    Feature Detection and Descriptors

    SIFT, ORB, and corner/blob detectors.

  3. 03

    Multi-View Geometry

    Camera models, fundamental matrix, and triangulation.

  4. 04

    Structure from Motion

    Recovering 3D structure and camera poses from images.

  5. 05

    Visual SLAM

    Simultaneous localization and mapping from cameras.

  6. 06

    Optical Flow

    Dense and sparse motion estimation between frames.

  7. 07

    Stereo Vision

    Disparity estimation and depth from binocular images.

  8. 08

    Photometric Stereo

    Recovering surface normals from images under varying lighting.

  9. 09

    Computational Photography

    HDR, panorama stitching, and computational imaging.


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