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226 11 Cloud-Based Image Compression
Figure 11.2 The block diagram of the proposed cloud-based image decoder.
prediction from the decompressed image after up-sampling. Finally, the prediction
is subtracted from the feature vector. All components of SIFT descriptors are com-
pressed and transmitted to the cloud with the compressed down-sampled image.
The block diagram of the proposed cloud-based image decoder is depicted in
Figure 11.2. In the cloud, a server first decompresses the down-sampled image and
SIFT data. By using the decompressed location, scale, and orientation of every SIFT
descriptor again, one prediction vector, exactly the same ...