Nandan Dubey

IIT Kanpur, Computer Science & Engineering, Graduate Student

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I am a fourth year dual degree student of Computer Science and Engineering at IIT Kanpur.

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Supervisors: Amitabha Mukerjee
Phone: +91-9935603401
Address: F-208/Hall 1, IIT, Kanpur

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Vision

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Natural Image Statistics

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Papers by Nandan Dubey

A Generalized Wavelet Expansion-based Algorithm for Line Scratches Detection in Old colored or grey Videos and Static Images

This article presents a generalization of Jin Xu, Jinghuo Guan, Xingdong Wang, Jun Sun and Guangt... more This article presents a generalization of Jin Xu, Jinghuo Guan, Xingdong Wang, Jun Sun and Guangtao Zhai's OWEbased line scratch detection . It is based on Over-complete wavelet Expansion(OWE), which allows us to design a more efficacious and precise position description for scratch than traditional methods. The proposed detector even works well for secondary (minor) scratches resulting in a completely automatic detection. The experimental results show that the proposed detector works better in terms of good detection and false alarms rejection with a lower computational time. The method is applicable to both colored and grayscale images or videos. It also presents a simple and efficient technique for removal of detected scratches in images and videos. More sophisticated methods for missing data interpolation are present in literature which can be used at expense of increasing time complexity. The optimized way of scratch detection makes it easy to remove the scratch without any kind of decrease in image quality. All methods are static as it works independently on each single frame of the sequence, and hence is also applicable to images.

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