Low latency image retrieval with progressive transmission of CHoG descriptors
Vijay Chandrasekhar, Sam S. Tsai, Gabriel Takacs, David M. Chen, Ngai‐Man Cheung, Yuriy A. Reznik, Ramakrishna Vedantham, Radek Grzeszczuk, Bernd Girod · 2010
To reduce network latency for mobile visual search, we propose schemes for progressive transmission of Compressed Histogram of Gradients (CHoG) descriptors. Progressive transmission reduces the amount of transmitted data and enables early termination on the server, thus reducing end-to-end system latency. With progressive transmission of CHoG descriptors, we are able to reduce network latency to ~1 second in a 3G network. We report a 4× decrease in end-to-end system latency compared to transmitting uncompressed SIFT descriptors or JPEG images.