LOCALIZATION OF OBJECTS WITH CIRCULAR SYMMETRY IN A NOISY IMAGE USINGWAVELET TRANSFORMS AND ADAPTED CORRELATION

Two methods of detection of the position of objects with circular symm etry and variable size are presented. The methods, based on wavelet tr ansforms, allow the determination of the center of the objects in a no isy background due for example to speckle in holographic images. The f irst method uses the orthonormal wavelet transform of an image, while the second uses the correlation product of the image with an adapted r epresentation of the object. The last method is valid even for high no ise levels.