Method of providing a representation of an optical scene by the

Details Method of providing a representation of an optical scene by the Method of providing a representation of an optical scene by the

1997-03-17

1999-05-18

Chang, Jon

Image analysis

Image transformation or preprocessing

Walsh, hough, or hadamard transform

G06K9/36

Patent

active

059058188

ABSTRACT:
For providing a digital representation of an optical scene, radiometric values of N.times.N points representing a real two-dimensional optical scene are measured in the form of N.times.N respective electric signals x(i,j). N.times.N masks Mnm(i,j) respectively associated with the N.times.N electric signals x(i,j) are generated. For each couple (n,m), the N.times.N electric signals x(i,j) are weighted by the corresponding N.times.N masks Mnm(i,j) and the weighted electric signals are added to obtain N.times.N coefficients of the Walsh-Hadamard transform representing the optical scene.

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