Title :
Comparison of local feature descriptors for mobile visual search
Author :
Chandrasekhar, Vijay ; Chen, David M. ; Lin, Andy ; Takacs, Gabriel ; Tsai, Sam S. ; Cheung, Ngai-Man ; Reznik, Yuriy ; Grzeszczuk, Radek ; Girod, Bernd
Author_Institution :
Inf. Syst. Lab., Stanford Univ., Stanford, CA, USA
Abstract :
We evaluate the performance of MPEG-7 image signatures, Compressed Histogram of Gradients descriptor (CHoG) and Scale Invariant Feature Transform (SIFT) descriptors for mobile visual search applications. We observe that SIFT and CHoG outperform MPEG-7 image signatures greatly in terms of feature-level Receiver Operating Characteristic (ROC) performance and image-level matching. Moreover, CHoG descriptors demonstrate such gains while being comparable with MPEG-7 image signatures in bit-rate.
Keywords :
digital signatures; feature extraction; image coding; image matching; mobile computing; mobile handsets; CHoG; MPEG-7 image signatures; SIFT; compressed Histogram of gradients descriptor; image matching; local feature descriptors; mobile visual search; scale invariant feature transform; Accuracy; Computer vision; Databases; Histograms; Mobile communication; Transform coding; Visualization; MPEG-7 Image Signature; feature descriptor; image signature; mobile visual search;
Conference_Titel :
Image Processing (ICIP), 2010 17th IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-7992-4
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2010.5649937
