Ridgelet Compression Method of Luggage X-ray Inspection Images
Zongjian Li, Li Min Zeng, Rifeng Zhou · 2008
Inspecting luggage of passengers that get across the important passageway (such as airdrome, dock, depot etc.) has become broad safety precaution in the world. However, these inspected images have a large size of the datasets. In general, the useful and useless information in the luggage X-ray inspection image sequence don’t be distinguished, so much computation resource and storage space are wasted. Considering the speciality of this sequence, we researched a compression method based on interesting region detection using ridgelet. The hybrid method was composed of ridgelet transform and background subtraction, which could detect the image with interesting region change efficiently. First, judge the present image whether with interesting luggage change or not. If having, compress the image with low loss or lossless. Else, compress the image with high compression ratio. The experiment showed the effectiveness of our compression method. Keywords: X-ray inspection, compression, ridgelet, background subtraction 1.