Pappas Delivers Invited Keynote Address at 5th European Workshop on Visual Information Processing

The topic of his presentation was, titled, "Visual Analysis and Compression: Focus on Texture Similarity."

Prof. Thrasos Pappas gave an invited keynote address at the 5th European Workshop on Visual Information Processing (EUVIP 2014), held on December 10-12 in Paris, France.

Prof. Thrasos PappasThe topic of his presentation was, titled, "Visual Analysis and Compression: Focus on Texture Similarity."

The EUVIP workshop's focus was on visual information processing, modeling, and analysis methods inspired by the human and biological visual systems.

Talk Abstract: Texture is an important visual attribute both for human perception and image analysis systems.  We present new structural texture similarity metrics and applications that critically depend on such metrics, with emphasis on image compression and content-based retrieval.  The new metrics account for human visual perception and the stochastic nature of textures.  They rely entirely on local image statistics and allow substantial point-by-point deviations between textures that according to human judgment are similar or essentially identical. We also present new testing procedures for objective texture similarity  metrics.  We identify three operating domains for evaluating the performance of such similarity metrics: the top of the similarity scale, where a monotonic relationship between metric values and subjective scores is desired;  the ability to distinguish between perceptually similar and dissimilar textures; and the ability to retrieve "identical" textures.  Each domain has different performance goals and requires different testing procedures.  Experimental results demonstrate both the performance of the proposed metrics and the effectiveness of the proposed subjective testing procedures.