Limits on Super-Resolution and How to Break Them
IEEE Transactions on Pattern Analysis and Machine Intelligence
Automatic Eyeglasses Removal from Face Images
IEEE Transactions on Pattern Analysis and Machine Intelligence
Example-based composite sketching of human portraits
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
Real-Time Pattern Matching Using Projection Kernels
IEEE Transactions on Pattern Analysis and Machine Intelligence
Hallucinating multiple occluded face images of different resolutions
Pattern Recognition Letters
Hallucinating multiple occluded face images of different resolutions
Pattern Recognition Letters - Special issue on vision for crime detection and prevention
Face Hallucination: Theory and Practice
International Journal of Computer Vision
Computer Vision and Image Understanding
ICA Based Super-Resolution Face Hallucination and Recognition
ISNN '07 Proceedings of the 4th international symposium on Neural Networks: Part II--Advances in Neural Networks
Face Hallucination Based on CSGT and PCA
ISNN '08 Proceedings of the 5th international symposium on Neural Networks: Advances in Neural Networks, Part II
Survey and analysis of multimodal sensor planning and integration for wide area surveillance
ACM Computing Surveys (CSUR)
ECCV '08 Proceedings of the 10th European Conference on Computer Vision: Part I
A soft MAP framework for blind super-resolution image reconstruction
Image and Vision Computing
Image Magnification by a Compact Method with Preservation of Preferential Components
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
An Example-Based Two-Step Face Hallucination Method through Coefficient Learning
ICIAR '09 Proceedings of the 6th International Conference on Image Analysis and Recognition
ICIAP '09 Proceedings of the 15th International Conference on Image Analysis and Processing
Upscaling faces for recognition systems using trained filters
IMCE '09 Proceedings of the 1st international workshop on Interactive multimedia for consumer electronics
Precise image registration with structural similarity error measurement applied to superresolution
EURASIP Journal on Advances in Signal Processing
Coupled Metric Learning for Face Recognition with Degraded Images
ACML '09 Proceedings of the 1st Asian Conference on Machine Learning: Advances in Machine Learning
Face Image Enhancement via Principal Component Analysis
AI '09 Proceedings of the 22nd Australasian Joint Conference on Advances in Artificial Intelligence
A Stochastic Method for Face Image Super-Resolution
ISVC '09 Proceedings of the 5th International Symposium on Advances in Visual Computing: Part I
Position-based face hallucination method
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Personal photo enhancement using example images
ACM Transactions on Graphics (TOG)
Steerable pyramid-based face hallucination
Pattern Recognition
Hallucinating face by position-patch
Pattern Recognition
Super-resolution of human face image using canonical correlation analysis
Pattern Recognition
Face hallucination and recognition
AVBPA'03 Proceedings of the 4th international conference on Audio- and video-based biometric person authentication
ACCV'07 Proceedings of the 8th Asian conference on Computer vision - Volume Part II
An automatic portrait system based on and-or graph representation
EMMCVPR'07 Proceedings of the 6th international conference on Energy minimization methods in computer vision and pattern recognition
Facial parts-based face hallucination method
ICISP'10 Proceedings of the 4th international conference on Image and signal processing
Image super-resolution via sparse representation
IEEE Transactions on Image Processing
Efficient graphical models for processing images
CVPR'04 Proceedings of the 2004 IEEE computer society conference on Computer vision and pattern recognition
Face hallucination with pose variation
FGR' 04 Proceedings of the Sixth IEEE international conference on Automatic face and gesture recognition
Frontal face generation from multiple low-resolution non-frontal faces for face recognition
ACCV'10 Proceedings of the 2010 international conference on Computer vision - Volume Part I
Video-based facial expression hallucination: a two- level hierarchical fusion approach
ACIVS'06 Proceedings of the 8th international conference on Advanced Concepts For Intelligent Vision Systems
Facial expression hallucination through eigen-associative learning
ICWL'06 Proceedings of the 5th international conference on Advances in Web Based Learning
ECCV'06 Proceedings of the 9th European conference on Computer Vision - Volume Part II
Multi-scale MAP estimation of high-resolution images
PSIVT'06 Proceedings of the First Pacific Rim conference on Advances in Image and Video Technology
Fast computation of edge model representation for image sequence super-resolution
PerMIn'12 Proceedings of the First Indo-Japan conference on Perception and Machine Intelligence
A block-based orthogonal locality preserving projection method for face super-resolution
ACIIDS'12 Proceedings of the 4th Asian conference on Intelligent Information and Database Systems - Volume Part II
Face hallucination based on morphological component analysis
Signal Processing
Coupled marginal fisher analysis for low-resolution face recognition
ECCV'12 Proceedings of the 12th international conference on Computer Vision - Volume 2
A survey of face hallucination
CCBR'12 Proceedings of the 7th Chinese conference on Biometric Recognition
ACCV'12 Proceedings of the 11th Asian conference on Computer Vision - Volume Part II
Virtual view generation using clustering based local view transition model
ACCV'12 Proceedings of the 11th international conference on Computer Vision - Volume 2
Face hallucination on personal photo albums
ACCV'12 Proceedings of the 11th international conference on Computer Vision - Volume 2
Face hallucination based on sparse local-pixel structure
Pattern Recognition
Facial-feature detection and localization based on a hierarchical scheme
Information Sciences: an International Journal
A Comprehensive Survey to Face Hallucination
International Journal of Computer Vision
Boosted Pre-loaded Mixture of Experts for low-resolution face recognition
International Journal of Hybrid Intelligent Systems
Low-resolution face recognition: a review
The Visual Computer: International Journal of Computer Graphics
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Faces often appear very small in surveillance imagery because of the wide fields of view that are typically used and the relatively large distance between the cameras and the scene. For tasks such as face recognition, resolution enhancement techniques are therefore generally needed. Although numerous resolution enhancement algorithms have been proposed in the literature, most of them are limited by the fact that they make weak, if any, assumptions about the scene. We propose an algorithm to learn a prior on the spatial distribution of the image gradient for frontal images of faces. We proceed to show how such a prior can be incorporated into a resolution enhancement algorithm to yield 4-8 fold improvements in resolution (i.e. 16--64 times as many pixels). The additional pixels are, in effect, hallucinated.