The adaptive enhancement means based on gray entropy applied in mammary gland CR image
Ming Zhang · Optical Technique · 2010
Mammary gland is composed of similar density soft tissue.Mammary gland CR image is bad contrast.Small difference vary is the possibility for checking tumour,so it is necessary to enhance mammary gland CR image to improve its visual quality in order to satisfy doctor diagnosis.However presently common enhancement algorithms,the contrast and noise is enhanced overly and image details are lost.Aiming at the defects,mammary gland CR medicine image adaptive enhancement arithmetic is put forward based on image gray entropy.The arithmetic adapts the unsharp masking to enhance select frequency response in order to enhance mammary gland CR image edge details.It can adjust factor K based on image gray characteristic.Experiment results demonstrate that mammary gland CR image enhanced by the algorithm has abundant detail and high signal to noise ratio.CR image enhanced has good visual effect.The method is fit for edge detail enhancement of mammary gland CR medicine image.