M
Mark S. Drew
Researcher at Simon Fraser University
Publications - 193
Citations - 6996
Mark S. Drew is an academic researcher from Simon Fraser University. The author has contributed to research in topics: Color image & Pixel. The author has an hindex of 36, co-authored 192 publications receiving 6567 citations. Previous affiliations of Mark S. Drew include University of East Anglia & University of British Columbia.
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Journal ArticleDOI
On the removal of shadows from images
TL;DR: This paper shows how to recover a 3D, full color shadow-free image representation by first (with the help of the 2D representation) identifying shadow edges and proposing a method to reintegrate this thresholded edge map, thus deriving the sought-after 3D shadow- free image.
Book ChapterDOI
Removing Shadows from Images
TL;DR: It is shown that a good calibration can be achieved simply by recording a sequence of images of a fixed outdoor scene over the course of a day, and that the resulting calibration is close to that achievable using measurements of the camera's sensitivity functions.
Journal ArticleDOI
Color image processing pipeline
TL;DR: An overview of the image processing pipeline is presented, first from a signal processing perspective and later from an implementation perspective, along with the tradeoffs involved.
Journal ArticleDOI
Spectral sharpening: sensor transformations for improved color constancy
TL;DR: In this paper, the spectral sharpening method is proposed to convert a given set of sensor sensitivity functions into a new set that will improve the performance of any color-constancy algorithm that is based on an independent adjustment of the sensor response channels.
Journal ArticleDOI
Entropy Minimization for Shadow Removal
TL;DR: This work seeks that projection which produces a type of intrinsic, independent of lighting reflectance-information only image by minimizing entropy, and from there go on to remove shadows as previously, and goes over to the quadratic entropy, rather than Shannon's definition.