Filter design for gray image by down-sample and up-sample

Mousumi Gupta

doi:10.1117/12.946640

2 June 2012 Filter design for gray image by down-sample and up-sample

Mousumi Gupta

Proceedings Volume 8334, Fourth International Conference on Digital Image Processing (ICDIP 2012); 83341I (2012) https://doi.org/10.1117/12.946640
Event: Fourth International Conference on Digital Image Processing (ICDIP 2012), 2012, Kuala Lumpur, Malaysia

Abstract

Aims: Designing of a filter which can separate out the target from background in a given image. Methods: The original gray image is down-sampled by rejecting every alternate pixel values between two columns and two rows. A 3-step down-sampling was done to avoid major information loss. A 3-step up-sampling was done by replicating the lower row and the right column from the down-sampled data matrix to obtain the original size of the matrix. The image matrix thus obtained was subtracted from the original image. Results: The iterative down-sampling and up-sampling matrix gives the background information. Subtraction from original image obtains the target. Thus filters the background.

Citation Download Citation

Mousumi Gupta "Filter design for gray image by down-sample and up-sample", Proc. SPIE 8334, Fourth International Conference on Digital Image Processing (ICDIP 2012), 83341I (2 June 2012); https://doi.org/10.1117/12.946640

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