Recovering high dynamic range radiance maps from photographs
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Image precision silhouette edges
I3D '99 Proceedings of the 1999 symposium on Interactive 3D graphics
A Theory of Single-Viewpoint Catadioptric Image Formation
International Journal of Computer Vision
Fast bilateral filtering for the display of high-dynamic-range images
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Scalable alignment of large-format multi-projector displays using camera homography trees
Proceedings of the conference on Visualization '02
Combining edges and points for interactive high-quality rendering
ACM SIGGRAPH 2003 Papers
Bilateral Filtering for Gray and Color Images
ICCV '98 Proceedings of the Sixth International Conference on Computer Vision
Interactive rendering of suggestive contours with temporal coherence
Proceedings of the 3rd international symposium on Non-photorealistic animation and rendering
Non-photorealistic camera: depth edge detection and stylized rendering using multi-flash imaging
ACM SIGGRAPH 2004 Papers
Perceptual photometric seamlessness in projection-based tiled displays
ACM Transactions on Graphics (TOG)
High performance imaging using large camera arrays
ACM SIGGRAPH 2005 Papers
Coded exposure photography: motion deblurring using fluttered shutter
ACM SIGGRAPH 2006 Papers
Multiview radial catadioptric imaging for scene capture
ACM SIGGRAPH 2006 Papers
Fast separation of direct and global components of a scene using high frequency illumination
ACM SIGGRAPH 2006 Papers
Image and depth from a conventional camera with a coded aperture
ACM SIGGRAPH 2007 papers
Image upsampling via imposed edge statistics
ACM SIGGRAPH 2007 papers
ACM SIGGRAPH 2007 papers
Perception-based contrast enhancement of images
ACM Transactions on Applied Perception (TAP)
IEEE Transactions on Visualization and Computer Graphics
Programmable aperture photography: multiplexed light field acquisition
ACM SIGGRAPH 2008 papers
ACM SIGGRAPH 2008 papers
ACM Transactions on Graphics (TOG)
How well do line drawings depict shape?
ACM SIGGRAPH 2009 papers
BiDi screen: a thin, depth-sensing LCD for 3D interaction using light fields
ACM SIGGRAPH Asia 2009 papers
Two Fast Methods for High-Quality Line Visibility
IEEE Transactions on Visualization and Computer Graphics
ACM SIGGRAPH Asia 2010 papers
Coded Strobing Photography: Compressive Sensing of High Speed Periodic Videos
IEEE Transactions on Pattern Analysis and Machine Intelligence
Polarization fields: dynamic light field display using multi-layer LCDs
Proceedings of the 2011 SIGGRAPH Asia Conference
Fast high-resolution appearance editing using superimposed projections
ACM Transactions on Graphics (TOG)
A perceptually motivated three-component image model-Part I: description of the model
IEEE Transactions on Image Processing
Adaptive image synthesis for compressive displays
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
Content-adaptive lenticular prints
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
| Hi-index | 0.00 |
Digital projection technology has improved significantly in recent years. But, the relationship of cost with respect to available resolution in projectors is still super-linear. In this paper, we present a method that uses projector light modulator panels (e.g. LCD or DMD panels) of resolution n X n to create a perceptually close match to a target higher resolution cn X cn image, where c is a small integer greater than 1. This is achieved by enhancing the resolution using smaller pixels at specific regions of interest like edges. A target high resolution image (cn X cn) is first decomposed into (a) a high resolution (cn X cn) but sparse edge image, and (b) a complementary lower resolution (n X n) non-edge image. These images are then projected in a time sequential manner at a high frame rate to create an edge-enhanced image -- an image where the pixel density is not uniform but changes spatially. In 3D ready projectors with readily available refresh rate of 120Hz, such a temporal multiplexing is imperceptible to the user and the edge-enhanced image is perceptually almost identical to the target high resolution image. To create the higher resolution edge image, we introduce the concept of optical pixel sharing. This reduces the projected pixel size by a factor of 1/c2 while increasing the pixel density by c2 at the edges enabling true higher resolution edges. Due to the sparsity of the edge pixels in an image we are able to choose a sufficiently large subset of these to be displayed at the higher resolution using perceptual parameters. We present a statistical analysis quantifying the expected number of pixels that will be reproduced at the higher resolution and verify it for different types of images.