High-frequency digital magnification

Thomas R. Edwards

doi:10.1117/12.58340

19 May 1992 High-frequency digital magnification

Thomas R. Edwards

Proceedings Volume 1657, Image Processing Algorithms and Techniques III; (1992) https://doi.org/10.1117/12.58340
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

High frequency digital magnification is an application of two dimensional convolute integer (TDCI) technology. The results are images magnified by frequency sensitive convolution operators for replacement and interstitial point generation. The images to be presented are magnified from times two to times thirty-two with resolution enhancement. The artifacts, stair stepping diagonals, blocky gray area and blur, associated with classical digital magnification are absent. The frequency sensitivity of the operators will be illustrated with the use of mask sizes from 2 X 2 to 8 X 8 on a sample image. The use of resolution enhancement will be illustrated to show how the frequency response of an image is increased. The symmetry properties of TDCI technology which minimize the number of multiplications per convolution and enhance the overall system's throughput will be discussed, as well as execution times. This application of TDCI technology is coded in 'C' for the field of digital image processing software.

Citation Download Citation

Thomas R. Edwards "High-frequency digital magnification", Proc. SPIE 1657, Image Processing Algorithms and Techniques III, (19 May 1992); https://doi.org/10.1117/12.58340

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