H 264 and MPEG-4 Video Compression phần 7 pps

... |q1−q0|≤β. α and β are thresholds defined in the standard; they increase with the average quantiser parameter QP of the two blocks p and q. The effect of the filter decision is to ‘switch off’ the filter when ... (rather than blocking effects) that should be preserved and so the thresholds α and β are low. When QP is larger, blocking distortion is likely to be more significant and α, β...

Ngày tải lên: 14/08/2014, 12:20

... filtered and downsampled in the x-direction and H is the original image high-pass filtered and downsampled in the x- direction. Next, each column of these new images is filtered with low- and high-pass ... direction and contains residual vertical frequencies, ‘LH’ is high-pass filtered in the horizontal direction and contains residual horizontal frequencies and ‘HH’ is high-pass fi...

Ngày tải lên: 14/08/2014, 12:20

... that extends outside the boundaries of the reference VOP. Figure 5.10 shows the lower-left corner of a current VOP (right-hand image) and the previous, reference VOP (left-hand image). The hand ... (Section 3.6 of Chapter 3 provides a more detailed ‘walk-through’ of the encoding and decoding process). The tools in the VLBV Core are based on the H. 263 standard and the ‘short header’ mo...

Ngày tải lên: 14/08/2014, 12:20

... groups and the ever-changing market. The answer to the much-asked question, ‘which standard is best for my application’, is not yet clear, although there are indications that H. 264 may become the ... Compression Standard, Chapman & Hall, 19 97. 13. IEEE Transactions on Circuits and Systems for Video Technology, special issue on H. 264/ AVC, to appear in 2003. H. 264 and...

Ngày tải lên: 14/08/2014, 12:20

... colormaps. Other standard maps that are appro- priate for grayscale images are ‘bone’ which has a slightly bluish tint, ‘pink’ which has a decidedly pinkish tint, and ‘copper’ which has a strong ... from the MATLAB’s established colormaps, then scale the image variable so the values lie within the range of the colormap; i.e., the data range should lie between 0 and N, where N is the depth...

Ngày tải lên: 06/08/2014, 00:20

... are much larger than the dimensions of the objects. The atmospheres of these objects are the product of their surfaces, both the surface composition and the interactions that occur on them and also ... document The surface of Mars is divided into smooth northern lowlands and cratered southern highlands. The cratering record indicates the age of the surface, while the original morphology...

Ngày tải lên: 08/08/2014, 13:20

... transmit filter and the HPA. The receiver is made out of the receive filter and the despreader, i.e., detector. It should be noticed that the transmit and the receive filters are chosen such that the channel ... efficient. But, on the other hand, the non-linear distortion effects increase and a higher SNR is needed to compensate for this effect compared to a linear channel. For high OBO v...

Ngày tải lên: 09/08/2014, 19:22

... before they are promoted. Often, successful CPAs have built strong relationships with the elder chief and avoided the children. Meanwhile, the children are forming their own relationships. Perhaps, ... chief’s ability and stress your wish to serve in the new environment. When Family Members Become the Chief The time to build relationships with family members who may become the chief is mo...

Ngày tải lên: 10/08/2014, 07:20

... Page 85 I had entered the green and had passed the old washing house. I was thinking of the engine at the time. I had gone as far as the herd’s house when the idea came into my mind that as steam ... effort and energy thinking hard. Then, after you have given up, they come sauntering in with their hands in their pockets. If the effort had not been made to open the door, however, who knows...

Ngày tải lên: 10/08/2014, 07:21

... to choose a channel from other wireless LANs that has less signal strength than the others, and hope you can override their signals close to you with yours. The Access Point Name value is not that ... into the router, and access the remaining configuration items. Select the DHCP tab at the top of the page to get the screen shown in Figure 13 .7. This screen is where we define the values f...

Ngày tải lên: 10/08/2014, 12:21