Name
Abstract | ||
|---|---|---|
As a basic tool for deriving sparse representation of a color image from its atomic-decomposition with a redundant dictionary, this paper presents a new kind of shrinkage, viz. color shrinkage, which utilizes inter-channel color cross-correlations directly in the three primary color space. Among various schemes of color shrinkage, this paper particularly addresses the hard color-shrinkage, a natural extension of the classic hard-shrinkage, and shows the advantages over the existing shrinkage approach where the classic hard-shrinkage is applied after a non-redundant color transformation. Moreover, to mitigate defects of the existing shrinkage approach, this paper presents a new simple color-shrinkage scheme that applies the classic hard-shrinkage together with a redundant color transformation instead of a non-redundant color transformation. Furthermore, this paper applies our color-shrinkage schemes to color-image denoising in the tight-frame Haar wavelet transform domain, and experimentally demonstrates their superiority over the existing shrinkage approach. |
Year | Venue | Keywords |
|---|---|---|
2010 | Aalborg | haar transforms,image colour analysis,image representation,wavelet transforms,classic hard-shrinkage,inter-channel color cross-correlations,redundant color transformation,simple color-shrinkage scheme,sparse coding,sparse representation,three primary color space,tight-frame haar wavelet transform domain,dictionaries,color,colored noise,noise reduction |
Field | DocType | ISSN |
Computer vision,Color histogram,Shrinkage,Color balance,Demosaicing,Artificial intelligence,Color normalization,Color quantization,Mathematics,Primary color,Color image | Conference | 2219-5491 |
Citations | PageRank | References |
1 | 0.39 | 4 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Takahiro Saito | 1 | 100 | 30.46 |
| Yasutaka Ueda | 2 | 4 | 1.51 |
| Takashi Komatsu | 3 | 113 | 33.96 |