TY - GEN
T1 - Cubic surface fitting to image with edges as constraints
AU - Zhang, Caiming
AU - Zhang, Xin
AU - Li, Xuemei
AU - Cheng, Fuhua
PY - 2013
Y1 - 2013
N2 - Conventional polynomial interpolation methods produce images with blurred edges, while edge-directed interpolation methods make enlarged images with good quality edges but with detail distortion in the non-edge portion. A new method for constructing a fitting surface to image data is presented. Unlike existing methods which produce enlarged images using image data as interpolation data, the new method constructs the fitting surface using the image data as constraints to reverse the sampling process for improving the fitting precision. To remove the zigzagging artifact, for each pixel and its nearby region, the edge information is used to determine the quadratic polynomial which approximates the original scene with a quadratic polynomial precision. Comparison results of the new method with other methods are included.
AB - Conventional polynomial interpolation methods produce images with blurred edges, while edge-directed interpolation methods make enlarged images with good quality edges but with detail distortion in the non-edge portion. A new method for constructing a fitting surface to image data is presented. Unlike existing methods which produce enlarged images using image data as interpolation data, the new method constructs the fitting surface using the image data as constraints to reverse the sampling process for improving the fitting precision. To remove the zigzagging artifact, for each pixel and its nearby region, the edge information is used to determine the quadratic polynomial which approximates the original scene with a quadratic polynomial precision. Comparison results of the new method with other methods are included.
KW - Surface fitting
KW - image resizing
KW - quadratic polynomial
KW - reversing
UR - http://www.scopus.com/inward/record.url?scp=84897763952&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897763952&partnerID=8YFLogxK
U2 - 10.1109/ICIP.2013.6738216
DO - 10.1109/ICIP.2013.6738216
M3 - Conference contribution
AN - SCOPUS:84897763952
SN - 9781479923410
T3 - 2013 IEEE International Conference on Image Processing, ICIP 2013 - Proceedings
SP - 1046
EP - 1050
BT - 2013 IEEE International Conference on Image Processing, ICIP 2013 - Proceedings
T2 - 2013 20th IEEE International Conference on Image Processing, ICIP 2013
Y2 - 15 September 2013 through 18 September 2013
ER -