Paper Info
Title
Compression Of 3d Integral Images Using Wavelet Decomposition
Abstract
This paper presents a wavelet-based lossy compression technique for unidirectional 3D integral images (UII). The method requires the extraction of different viewpoint images from the integral image. A single viewpoint image is constructed by extracting one pixel from each microlens, then each viewpoint image is decomposed using a Two Dimensional Discrete Wavelet Transform (2D-DWT). The resulting array of coefficients contains several frequency bands. The lower frequency bands of the viewpoint images are assembled and compressed using a 3 Dimensional Discrete Cosine Transform (3D-DCT) followed by Huffman coding. This will achieve decorrelation within and between 2D low frequency bands from the different viewpoint images. The remaining higher frequency bands are Arithmetic coded. After decoding and decompression of the viewpoint images using an inverse 3D-DCT and an inverse 2D-DWT, each pixel from every reconstructed viewpoint image is put back into its original position within the microlens to reconstruct the whole 3D integral image.Simulations were performed on a set of four different grey level 3D UII using a uniform scalar quantizer with deadzone. The results for the average of the four UII intensity distributions are presented and compared with previous use of 3D-DCT scheme. It was found that the algorithm achieves better rate-distortion performance, with respect to compression ratio and image quality at very low bit rates.
Year
DOI
Venue
2003
10.1117/12.503035
VISUAL COMMUNICATIONS AND IMAGE PROCESSING 2003, PTS 1-3
Keywords
Field
DocType
image compression, integral 3D imaging, viewpoint images, 2D-DWT, 3D-DCT
Computer vision,Lossy compression,Computer science,Discrete cosine transform,Algorithm,Image quality,JPEG,Artificial intelligence,Discrete wavelet transform,Image compression,Wavelet,Wavelet transform
Conference
Volume
ISSN
Citations 
5150
0277-786X
3
PageRank 
References 
Authors
0.46
1
2
Name
Order
Citations
PageRank
Meriem Mazri1131.31
Amar Aggoun211521.34