In this paper we present a new lossless image compression algorithm. To achieve the high compression speed we use a linear prediction, modified Golomb–Rice code family, and a very fast prediction error modeling method. We compare the algorithm experimentally with others for medical and natural continuous tone grayscale images of depths of up to 16 bits. Its results are especially good for big i...

High Efficiency Video Coding (HEVC) is an advanced video coding technique, which is designed to double the Data compression ratio compared to the other video standard with the same level of video quality. The HEVC video coding layer uses the same hybrid approach used in all modern video standards used in earlier H.264. To achieve the high compression ration HEVC supports the recursive quad-tree...

such as interframe coding combined with variable length codes[9] or conditional replenishment[6] [8], that are less efficient than current coding techniques. Other techniques such as subband coding[1] have demonstrated promise for only a few types of services. Another recent study, which provides insights into long run statistics for coded video sequences, used block based intraframe discrete c...

A major challenge for the brain is to extract precise information about the attributes of tactile stimuli from signals that co-vary with multiple parameters, e.g. speed and texture in the case of scanning movements. We determined the ability of humans to estimate the tangential speed of surfaces moved under the stationary fingertip, and the extent to which the physical characteristics of the su...

the gobies are non-commercial fishes in the iranian waters of the caspian sea for which population dynamics and stock status are poorly known. in this survey, we tried to define species diversity and catch per unit effort (cpue) of gobiidae by using beach seine nets in salmanshahr, the southern caspian sea. from march 2011 to april 2012, 224 specimens representing 4 gobiid species, belonging to...

Motion estimation is one of the most computationally challenging parts of any video encoder. An estimated 50% to 70% encoder complexity is due to motion estimation. Recent video coding standards like H.264/MPEG-4(AVC) and HEVC include a sophisticated motion estimation algorithm called Test Zone Search. This paper examines the algorithms designed to perform Coding Unit type and size selection in...

In this paper, we propose a novel method on tracking unit pixel width line segments for function approximation-based image coding. This method is applied prior to function approximation of line segments in image coding. Compared to conventional methods, our method overcomes the problems introduced by inaccurately tracking unit pixel width contours that appear normally in images of fine details ...

Methods Staff responsible for studies included in a Unit Progress Report (MRC CTU, April 2009) were asked to complete a questionnaire survey regarding consumer involvement. This was defined as active involvement of consumers as partners in the research process and not as subjects of that research. The electronic questionnaires combined open and closed questions, intended to capture quantitative...