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Super Resolution  Image Reconstruction

High quality images are demanded in a wide variety of applications, including surveillance systems, medical imaging, and high-definition TV (HDTV) displays. It is possible to increase the spatial resolution and reduce the noise by combining overlapping multiple images. This process is known as super-resolution image reconstruction. We have developed several algorithms handling compression, using learning-based priors, modeling Bayer sampling, and handling photometric variations.

 

Related Publications:

Superresolution under photometric diversity of images, Murat Gevrekci and Bahadir K. Gunturk, EURASIP Journal on Advances in Signal Processing, Special Issue: Super-Resolution Enhancement of Digital Video, 2007. [pdf

 

Restoration of bayer-sampled image sequences, Murat Gevrekci, Bahadir K. Gunturk, and Yucel Altunbasak,  Oxford University Press, Computer Journal, 2007. [pdf]

 

Super-resolution reconstruction of compressed video using transform-domain statistics, Bahadir K. Gunturk, Yucel Altunbasak, and Russell M. Mersereau, IEEE Trans. Image Processing, vol. 13, no. 1, pp. 33-43, January 2004. [pdf]  

 

Eigenface-domain super-resolution for face recognition, Bahadir K. Gunturk, Aziz U. Batur, Yucel Altunbasak, Monson H. Hayes III, and Russell M. Mersereau, IEEE Trans. Image Processing, vol. 12, no. 5, pp. 597-606, May 2003. [pdf]  

 

Multi-frame resolution enhancement methods for compressed video, Bahadir K. Gunturk, Yucel Altunbasak, and Russell M. Mersereau, IEEE Signal Processing Letters, vol. 9, no. 6, pp. 170-174, June 2002. [pdf]  

 

Software available

 

 

Sample Results:    

 

The following is an example of super-resolution image reconstruction.

 

This is the data set:

 

 

 

Left: One of the images (cropped). Right: Super-resolution image reconstruction applied.

 

Bilinear Interpolation Result 

Super Resolution Result 

  

 

 

 

 

The idea can be extended to obtain high-quality video sequences. Download the following example.

Left: Input video. Right: Output video.

 

 

 

 

 

 

 

Images from a the data set consisting of 50 images :

 

 

 

Bilinear interpolation and super resolution results:

 

Bilinear Interpolation

Result

Super Resolution

Result