Correction of the spatial noise of LCD using error diffusion

Jiahua Fan; Hans Roehrig; Kunal Gandhi; Malur K. Sundareshan

doi:10.1117/12.624947

16 September 2005 Correction of the spatial noise of LCD using error diffusion

Jiahua Fan, Hans Roehrig, Kunal Gandhi, Malur K. Sundareshan

Proceedings Volume 5923, Penetrating Radiation Systems and Applications VII; 59230N (2005) https://doi.org/10.1117/12.624947
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

LCDs are replacing CRTs as primary diagnostic softcopy displays in clinics. They exhibit higher spatial noise than CRTs, which can interfere with diagnosis and reduce the efficiency especially when subtle abnormalities are presented. We have reported recently a study on the LCD spatial noise¹. A high quality CCD camera was used to acquire images from the LCD. Noise properties were estimated from the camera images. Then an error diffusion based operation was applied to compensate for the display spatial noise. This paper presents the noise estimation and compensation results on five different LCDs using same processing protocol. These five different LCDs vary in terms of matrix size, pixel size, pixel structure and vendors. The purpose of this work is to demonstrate that the LCD spatial noise estimation and compensation scheme we proposed earlier is valid, robust and necessary for different medical grade LCDs used in clinics today.

Citation Download Citation

Jiahua Fan, Hans Roehrig, Kunal Gandhi, and Malur K. Sundareshan "Correction of the spatial noise of LCD using error diffusion", Proc. SPIE 5923, Penetrating Radiation Systems and Applications VII, 59230N (16 September 2005); https://doi.org/10.1117/12.624947

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