Geometric Hashing - Efficient Algorithms for Image Recognition and Matching

Fouad Sabry

Sinopsis

What is Geometric Hashing

In computer science, geometric hashing is a method for efficiently finding two-dimensional objects represented by discrete points that have undergone an affine transformation, though extensions exist to other object representations and transformations. In an off-line step, the objects are encoded by treating each pair of points as a geometric basis. The remaining points can be represented in an invariant fashion with respect to this basis using two parameters. For each point, its quantized transformed coordinates are stored in the hash table as a key, and indices of the basis points as a value. Then a new pair of basis points is selected, and the process is repeated. In the on-line (recognition) step, randomly selected pairs of data points are considered as candidate bases. For each candidate basis, the remaining data points are encoded according to the basis and possible correspondences from the object are found in the previously constructed table. The candidate basis is accepted if a sufficiently large number of the data points index a consistent object basis.

How you will benefit

(I) Insights, and validations about the following topics:

Chapter 1: Geometric hashing

Chapter 2: Analytic geometry

Chapter 3: Cartesian coordinate system

Chapter 4: 2D computer graphics

Chapter 5: Coordinate system

Chapter 6: Translation (geometry)

Chapter 7: Hough transform

Chapter 8: Scale-invariant feature transform

Chapter 9: Homography

Chapter 10: Geometric feature learning

(II) Answering the public top questions about geometric hashing.

(III) Real world examples for the usage of geometric hashing in many fields.

Who this book is for

Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of Geometric Hashing.

Disponible desde: 11/05/2024.

Longitud de impresión: 136 páginas.

Ciencia y tecnología

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