ICIAR '08 Proceedings of the 5th international conference on Image Analysis and Recognition
Reconstruction of Chinese tablet calligraphy characters
SIP '07 Proceedings of the Ninth IASTED International Conference on Signal and Image Processing
Image upscaling using global multimodal priors
ACIVS'07 Proceedings of the 9th international conference on Advanced concepts for intelligent vision systems
An image interpolation scheme for repetitive structures
ICIAR'06 Proceedings of the Third international conference on Image Analysis and Recognition - Volume Part I
Morphological image interpolation to magnify images with sharp edges
ICIAR'06 Proceedings of the Third international conference on Image Analysis and Recognition - Volume Part I
Greyscale image interpolation using mathematical morphology
ACIVS'06 Proceedings of the 8th international conference on Advanced Concepts For Intelligent Vision Systems
Reconstruction of low-resolution images using adaptive bimodal priors
ICIAR'07 Proceedings of the 4th international conference on Image Analysis and Recognition
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We present a new method for interpolating binary images that outperforms existing techniques. Bitmapped images have a specific horizontal and vertical resolution. When we magnify such an image, we want the resolution to be increased, allowing more details in the image. However, these extra details are not present in the original image. A blowup of the image using simple interpolation will introduce jagged edges, also called "jaggies". We present a new interpolation technique "mmINT", which avoids these errors. It is based on mathematical morphology, a theoretical framework to alter an image while preserving the image objects' geometry. The algorithm detects jaggies in the blown up image and removes them, making the edges smoother. This is done by replacing specific black pixels with white pixels, and vice versa. The results show that mmINT is a superior technique for the interpolation of binary images, like logos, diagrams, cartoons and maps.