RSSConference Papers

ICCV 2011 – Multiview Structure from Motion in Trajectory Space

ICCV 2011 – Multiview Structure from Motion in Trajectory Space

| November 1, 2011

Aamer Zaheer, Ijaz Akhter, Mohammad Haris Baig, Shabbir Marzban, Sohaib Khan International Conference on Computer Vision, ICCV, 2011 Abstract Most nonrigid objects exhibit temporal regularities in their deformations. Recently it was proposed that these regularities can be parameterized by assuming that the non- rigid structure lies in a small dimensional trajectory space. In this paper, […]

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ICIP 2009 – Early Termination Algorithms for Adaboost Based Detectors

ICIP 2009 – Early Termination Algorithms for Adaboost Based Detectors

| November 8, 2009

Arif Mahmood, Sohaib Khan 16th International Conference on Image Processing, Cairo, Egypt, Nov 7-10, 2009 Abstract In this paper we propose an early termination algorithm for speeding up the detection phase of the Adaboost based de- tectors. In the basic algorithm, at a specific search location, the AdaBoost ensemble response is computed as monotonic decreasing […]

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BMVC 2009 – VillageFinder: Segmentation of Nucleated Villages in Satellite Imagery

BMVC 2009 – VillageFinder: Segmentation of Nucleated Villages in Satellite Imagery

| September 8, 2009

Kashif Murtaza, Sohaib Khan, Nasir Rajpoot British Machine Vision Conference (BMVC), September 2009 Abstract Geo-spatial data on village locations, their size, population and other parameters is scarcely available to decision makers in many developing countries. In this paper, we demonstrate an automatic “crawler” which can segment nucleated villages from satellite imagery freely available in public […]

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CVPR 2009 – In Defense of Orthonormality Constraints for Nonrigid Structure from Motion

CVPR 2009 – In Defense of Orthonormality Constraints for Nonrigid Structure from Motion

| June 8, 2009

Ijaz Akhter, Yaser Sheikh, Sohaib Khan IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2009 (Oral, 4.1% acceptance rate) Abstract In factorization approaches to nonrigid structure from motion, the 3D shape of a deforming object is usually modeled as a linear combination of a small number of basis shapes. The original approach to simultaneously […]

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NIPS 2008 – Nonrigid Structure from Motion in Trajectory Space

NIPS 2008 – Nonrigid Structure from Motion in Trajectory Space

| December 9, 2008

Ijaz Akhter, Yaser Sheikh, Sohaib Khan, Takeo Kanade 22nd Annual Conference on Neural Information Processing Systems, NIPS, Dec 2008 (Best Student Paper Nomination, ORAL, 2.7% acceptance rate)  Abstract Existing approaches to nonrigid structure from motion assume that the instantaneous 3D shape of a deforming object is a linear combination of basis shapes, which have to […]

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ICIP 2008 – Exploiting Local Auto-Correlation Function for Fast Video-to-Reference Image Alignment

ICIP 2008 – Exploiting Local Auto-Correlation Function for Fast Video-to-Reference Image Alignment

| October 9, 2008

Arif Mahmood, Sohaib Khan 15th IEEE International Conference on Image Processing, ICIP 2008 Abstract Digital images of natural scenes are usually characterized by strong spatial correlation between adjacent pixels which has been successfully exploited in the coding of still and moving pictures. In this work we show that the strong spatial correlation of natural images […]

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ACCV 2007 – Exploiting Inter-Frame Correlation for Fast Video to Reference Image Alignment

ACCV 2007 – Exploiting Inter-Frame Correlation for Fast Video to Reference Image Alignment

| November 9, 2007 | 0 Comments

Arif Mahmood, Sohaib Khan 8th Asian Conference on Computer Vision, ACCV 2007, Tokyo Japan Abstract Strong temporal correlation between adjacent frames of a video signal has been successfully exploited in standard video compression algorithms. In this work, we show that the temporal correlation in a video signal can also be used for fast video to […]

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ICIP 2007 – Early Termination Algorithms for Correlation Coefficient Based Block Matching

ICIP 2007 – Early Termination Algorithms for Correlation Coefficient Based Block Matching

| September 9, 2007 | 0 Comments

Arif Mahmood, Sohaib Khan 14th IEEE International Conference on Image Processing, ICIP 2007 Abstract Block based motion compensation techniques make frequent use of Early Termination Algorithms (ETA) to reduce the com- putational cost of block matching process. ETAs have been well studied in the context of Sum of Absolute Differences (SAD) match measure and are […]

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ICC 2007 – Video Coding with Linear Compensation (VCLC)

ICC 2007 – Video Coding with Linear Compensation (VCLC)

| June 9, 2007 | 0 Comments

Arif Mahmood, Zartash A Uzmi, Sohaib Khan IEEE International Conference on Communications, 2007 Abstract   Block based motion compensation techniques are commonly used in video encoding to reduce the temporal redundancy of the signal. In these techniques, each block in a video frame is matched with another block in a previous frame. The match criteria […]

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