paulownia is one of the fast-growing species that was attended to supply industrial requirement in recent years. the application of this species is limited because of low density, so wood modification via compression and densification is an effective method. for this purpose, the paulownia boles were prepared from shastkalateh forest and cut into blocks with 60×20×20 mm dimension. the variable ...

Several topics connecting basic vision research to image compression and image quality are discussed: 1) A battery of about 7 specially chosen simple stimuli should be used to tease apart the multiplicity of factors affecting image quality. 2) A "perfect" static display must be capable of presenting about 135 bits/mm2. This value is based on the need for 3 pixels/mm and 15 bits/pixel. 3) Image ...

image data require huge amounts of disk space and large bandwidths for transmission. hence, imagecompression is necessary to reduce the amount of data required to represent a digital image. thereforean efficient technique for image compression is highly pushed to demand. although, lots of compressiontechniques are available, but the technique which is faster, memory efficient and simple, surely...

Using today's graphics hardware, normal maps can be stored in several compressed formats that are decompressed on the fly in hardware during rendering. Several object-space and tangent-space normal map compression techniques using existing texture compression formats are evaluated. While decompression from these formats happens in real-time in hardware during rendering, compression to these for...