26 February 2008 The effect of JPEG compression on automated detection of microaneurysms in retinal images
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Abstract
As JPEG compression at source is ubiquitous in retinal imaging, and the block artefacts introduced are known to be of similar size to microaneurysms (an important indicator of diabetic retinopathy) it is prudent to evaluate the effect of JPEG compression on automated detection of retinal pathology. Retinal images were acquired at high quality and then compressed to various lower qualities. An automated microaneurysm detector was run on the retinal images of various qualities of JPEG compression and the ability to predict the presence of diabetic retinopathy based on the detected presence of microaneurysms was evaluated with receiver operating characteristic (ROC) methodology. The negative effect of JPEG compression on automated detection was observed even at levels of compression sometimes used in retinal eye-screening programmes and these may have important clinical implications for deciding on acceptable levels of compression for a fully automated eye-screening programme.
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M. J. Cree, M. J. Cree, H. F. Jelinek, H. F. Jelinek, } "The effect of JPEG compression on automated detection of microaneurysms in retinal images", Proc. SPIE 6813, Image Processing: Machine Vision Applications, 68130M (26 February 2008); doi: 10.1117/12.766276; https://doi.org/10.1117/12.766276
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