A Computational Approach to Edge Detection
IEEE Transactions on Pattern Analysis and Machine Intelligence
International Journal of Computer Vision
Machine vision
SUSAN—A New Approach to Low Level Image Processing
International Journal of Computer Vision
IEEE Transactions on Pattern Analysis and Machine Intelligence
Colour Model Selection and Adaption in Dynamic Scenes
ECCV '98 Proceedings of the 5th European Conference on Computer Vision-Volume I - Volume I
Shadow matting and compositing
ACM SIGGRAPH 2003 Papers
Image fusion for context enhancement and video surrealism
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
ACM SIGGRAPH 2004 Papers
Illumination Normalization with Time-Dependent Intrinsic Images for Video Surveillance
IEEE Transactions on Pattern Analysis and Machine Intelligence
Cast shadow segmentation using invariant color features
Computer Vision and Image Understanding
WACV-MOTION '05 Proceedings of the IEEE Workshop on Motion and Video Computing (WACV/MOTION'05) - Volume 2 - Volume 02
Pattern Recognition Letters - Special issue: In memoriam Azriel Rosenfeld
Removing photography artifacts using gradient projection and flash-exposure sampling
ACM SIGGRAPH 2005 Papers
Removing photography artifacts using gradient projection and flash-exposure sampling
ACM SIGGRAPH 2005 Papers
Recovering Intrinsic Images from a Single Image
IEEE Transactions on Pattern Analysis and Machine Intelligence
Visual Acuity in Day for Night
International Journal of Computer Vision
A shadow elimination approach in video-surveillance context
Pattern Recognition Letters
Hierarchical shadow detection for color aerial images
Computer Vision and Image Understanding
Image fusion for context enhancement and video surrealism
SIGGRAPH '05 ACM SIGGRAPH 2005 Courses
Shadow detection for moving objects based on texture analysis
Pattern Recognition
Shadow resistant tracking using inertia constraints
Pattern Recognition
ACM Transactions on Graphics (TOG)
Efficient gradient-domain compositing using quadtrees
ACM SIGGRAPH 2007 papers
Estimating the spectral sensitivity of a digital sensor using calibration targets
Proceedings of the 9th annual conference on Genetic and evolutionary computation
Restoring 2D Content from Distorted Documents
IEEE Transactions on Pattern Analysis and Machine Intelligence
Streaming multigrid for gradient-domain operations on large images
ACM SIGGRAPH 2008 papers
Real-time gradient-domain painting
ACM SIGGRAPH 2008 papers
Color Subspaces as Photometric Invariants
International Journal of Computer Vision
Separating corneal reflections for illumination estimation
Neurocomputing
Shadow Resistant Road Segmentation from a Mobile Monocular System
IbPRIA '07 Proceedings of the 3rd Iberian conference on Pattern Recognition and Image Analysis, Part II
Generalized Least Squares-Based Parametric Motion Estimation Under Non-uniform Illumination Changes
ICIAR '08 Proceedings of the 5th international conference on Image Analysis and Recognition
Shadow Detection and Removal from Solo Natural Image Based on Retinex Theory
ICIRA '08 Proceedings of the First International Conference on Intelligent Robotics and Applications: Part I
Extraction of Illumination Effects from Natural Images with Color Transition Model
ISVC '08 Proceedings of the 4th International Symposium on Advances in Visual Computing, Part II
Edge-avoiding wavelets and their applications
ACM SIGGRAPH 2009 papers
Coordinates for instant image cloning
ACM SIGGRAPH 2009 papers
Entropy Minimization for Shadow Removal
International Journal of Computer Vision
Shadow Detection in Dynamic Scenes Using Dense Stereo Information and an Outdoor Illumination Model
Dyn3D '09 Proceedings of the DAGM 2009 Workshop on Dynamic 3D Imaging
User-assisted intrinsic images
ACM SIGGRAPH Asia 2009 papers
ACM Transactions on Graphics (TOG)
Recovering high dynamic range by Multi-Exposure Retinex
Journal of Visual Communication and Image Representation
Hierarchical shadow detection for color aerial images
Computer Vision and Image Understanding
Tricolor attenuation model for shadow detection
IEEE Transactions on Image Processing
ISVC '09 Proceedings of the 5th International Symposium on Advances in Visual Computing: Part II
Robust fast belief propagation for real-time stereo matching
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 2
Distributed gradient-domain processing of planar and spherical images
ACM Transactions on Graphics (TOG)
Fast shadow detection for urban autonomous driving applications
IROS'09 Proceedings of the 2009 IEEE/RSJ international conference on Intelligent robots and systems
Estimating the Laplace-Beltrami operator by restricting 3D functions
SGP '09 Proceedings of the Symposium on Geometry Processing
Segmentation of soft shadows based on a daylight- and penumbra model
MIRAGE'07 Proceedings of the 3rd international conference on Computer vision/computer graphics collaboration techniques
Graph cut based segmentation of soft shadows for seamless removal and augmentation
SCIA'07 Proceedings of the 15th Scandinavian conference on Image analysis
Shadow resistant direct image registration
SCIA'07 Proceedings of the 15th Scandinavian conference on Image analysis
Shadows attenuation for robust object recognition
MICAI'07 Proceedings of the artificial intelligence 6th Mexican international conference on Advances in artificial intelligence
A genetic programming approach to deriving the spectral sensitivity of an optical system
EuroGP'08 Proceedings of the 11th European conference on Genetic programming
Exploiting redundancy to solve the Poisson equation using local information
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Removing shadows from a single real-world color image
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Computing Color Transforms with Applications to Image Editing
Journal of Mathematical Imaging and Vision
A three-stage approach to shadow field estimation from partial boundary information
IEEE Transactions on Image Processing - Special section on distributed camera networks: sensing, processing, communication, and implementation
Detecting ground shadows in outdoor consumer photographs
ECCV'10 Proceedings of the 11th European conference on Computer vision: Part II
An interactive design system for water flow stains on outdoor images
SG'10 Proceedings of the 10th international conference on Smart graphics
Image-to-MIDI mapping based on dynamic fuzzy color segmentation for visually impaired people
Pattern Recognition Letters
Interactive editing of massive imagery made simple: Turning Atlanta into Atlantis
ACM Transactions on Graphics (TOG)
Illumination normalization with time-dependent intrinsic images for video surveillance
CVPR'03 Proceedings of the 2003 IEEE computer society conference on Computer vision and pattern recognition
Removal of moving objects and inconsistencies in color tone for an omnidirectional image database
ACCV'10 Proceedings of the 2010 international conference on Computer vision - Volume part II
Von Kries model under Planckian illuminants
ICIAP'11 Proceedings of the 16th international conference on Image analysis and processing: Part I
Shadow removal in gradient domain
ICIAR'05 Proceedings of the Second international conference on Image Analysis and Recognition
Removing shadows from face images using ICA
IbPRIA'05 Proceedings of the Second Iberian conference on Pattern Recognition and Image Analysis - Volume Part I
Estimating the Natural Illumination Conditions from a Single Outdoor Image
International Journal of Computer Vision
Visibility editing for all-frequency shadow design
EGSR'10 Proceedings of the 21st Eurographics conference on Rendering
Parallel gradient domain processing of massive images
EG PGV'11 Proceedings of the 11th Eurographics conference on Parallel Graphics and Visualization
Utilization of false color images in shadow detection
ECCV'12 Proceedings of the 12th international conference on Computer Vision - Volume 2
Label transfer exploiting three-dimensional structure for semantic segmentation
Proceedings of the 6th International Conference on Computer Vision / Computer Graphics Collaboration Techniques and Applications
Journal of Real-Time Image Processing
Estimating plant growth parameters using an energy minimization-based stereovision model
Computers and Electronics in Agriculture
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Illumination conditions cause problems for many computer vision algorithms. In particular, shadows in an image can cause segmentation, tracking, or recognition algorithms to fail. In this paper we propose a method to process a 3-band colour image to locate, and subsequently remove shadows. The result is a 3-band colour image which contains all the original salient information in the image, except that the shadows are gone.We use the method set out in [1] to derive a 1-d illumination invariant shadow-free image. We then use this invariant image together with the original image to locate shadow edges. By setting these shadow edges to zero in an edge representation of the original image, and by subsequently re-integrating this edge representation by a method paralleling lightness recovery, we are able to arrive at our sought after full colour, shadow free image. Preliminary results reported in the paper show that the method is effective.A caveat for the application of the method is that we must have a calibrated camera. We show in this paper 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. After calibration, only a single image is required for shadow removal. It is shown that the resulting calibration is close to that achievable using measurements of the camera's sensitivity functions.