The frequency response masking technique is an e cient method to realize sharp 1-D lters. This technique can synthesize sharp 1-D lters with a considerably lower complexity when compared to direct-form implementations. In this paper, we extend the frequency response masking technique to the design of 2-D diamond-shaped lters. The design procedure as well as the prototype and masking lters speci...

Quincunx downsampling splits the spectrum of an image in two diamond-shaped subbands. This allows the information to which the human eye is most sensitive to be preserved, and also requiring less bits in a lossy compression. In this paper, we develop an algorithm that performs successive quincunx subband decompositions, thus allowing multi-level decompositions and efficient coding. Theory of la...

This study evaluated the influence of cyclic loading on zirconia bar-shaped specimens after being subjected to three different surface treatments: particle abrasion with either 50 μm or 110 μm alumina and grinding with diamond points, while polished specimens served as a control. Statistical analysis revealed significant reduction (38-67%) in flexure strength (P < 0.001) after three million cyc...