Shi-min Hu | Tsinghua University (original) (raw)

Papers by Shi-min Hu

Research paper thumbnail of A Marching Method for Computing Intersection Curves of Two Subdivision Solids

Lecture Notes in Computer Science, 2005

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Research paper thumbnail of On the numerical redundancies of geometric constraint systems

Proceedings Ninth Pacific Conference on Computer Graphics and Applications. Pacific Graphics 2001, 2001

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Research paper thumbnail of A matrix-based approach to reconstruction of 3D objects from three orthographic views

Proceedings the Eighth Pacific Conference on Computer Graphics and Applications, 2000

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Research paper thumbnail of Feature sensitive mesh segmentation

Proceedings of the 2006 ACM symposium on Solid and physical modeling - SPM '06, 2006

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Research paper thumbnail of Efficient synthesis of gradient solid textures

Graphical Models, 2013

ABSTRACT Solid textures require large storage and are computationally expensive to synthesize. In... more ABSTRACT Solid textures require large storage and are computationally expensive to synthesize. In this paper, we propose a novel solid representation called gradient solids to compactly represent solid textures, including a tricubic interpolation scheme of colors and gradients for smooth variation and a region-based approach for representing sharp boundaries. We further propose a novel approach to directly synthesize gradient solid textures from exemplars. Compared to existing methods, our approach avoids the expensive step of synthesizing the complete solid textures at voxel level and produces optimized solid textures using our representation. This avoids significant amount of unnecessary computation and storage involved in the voxel-level synthesis while producing solid textures with comparable quality to the state of the art. The algorithm is much faster than existing approaches for solid texture synthesis and makes it feasible to synthesize high-resolution solid textures in full. We also propose a novel application—instant editing propagation on full solids.

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Research paper thumbnail of Hidden images

Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Non-Photorealistic Animation and Rendering - NPAR '11, 2011

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Research paper thumbnail of Painting patches: Reducing flicker in painterly re-rendering of video

Science China Information Sciences, 2011

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Research paper thumbnail of Poisson Coordinates

IEEE transactions on visualization and computer graphics, Jan 10, 2012

Harmonic functions are the critical points of a Dirichlet energy functional, the linear projectio... more Harmonic functions are the critical points of a Dirichlet energy functional, the linear projections of conformal maps. They play an important role in computer graphics, particularly for gradient-domain image processing and shape-preserving geometric computation. We propose Poisson coordinates, a novel transfinite interpolation scheme based on the Poisson integral formula, as a rapid way to estimate a harmonic function on a certain domain with desired boundary values. Poisson coordinates are an extension of the Mean Value coordinates (MVCs) which inherit their linear precision, smoothness, and kernel positivity. We give explicit formulae for Poisson coordinates in both continuous and 2D discrete forms. Superior to MVCs, Poisson coordinates are proved to be pseudo-harmonic (i.e., they reproduce harmonic functions on n-dimensional balls). Our experimental results show that Poisson coordinates have lower Dirichlet energies than MVCs on a number of typical 2D domains (particularly convex...

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Research paper thumbnail of Video-based running water animation in Chinese painting style

Science in China Series F: Information Sciences, 2009

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Research paper thumbnail of Video completion using tracking and fragment merging

The Visual Computer, 2005

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Research paper thumbnail of Interactive Image-Guided Modeling of Extruded Shapes

Computer Graphics Forum, 2014

ABSTRACT

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Research paper thumbnail of PAST: accurate instrumentation on fully optimized program

ABSTRACT

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Research paper thumbnail of Offset Approximation of Loop Subdivision Surfaces

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Research paper thumbnail of Stereoscopic image completion and depth recovery

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Research paper thumbnail of Polynomials

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Research paper thumbnail of A new algorithm for water wave animation

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Research paper thumbnail of Motion-Aware Gradient Domain Video Composition

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Research paper thumbnail of Aesthetic image enhancement by dependence-aware object recomposition

ABSTRACT This paper proposes an image-enhancement method to optimize photograph composition by re... more ABSTRACT This paper proposes an image-enhancement method to optimize photograph composition by rearranging foreground objects in the photograph. To adjust objects' positions while keeping the original scene content, we first perform a novel structure dependence analysis on the image to obtain the dependencies between all background regions. To determine the optimal positions for foreground objects, we formulate an optimization problem based on widely used heuristics for aesthetically pleasing pictures. Semantic relations between foreground objects are also taken into account during optimization. The final output is produced by moving foreground objects, together with their dependent regions, to optimal positions. The results show that our approach can effectively optimize photographs with single or multiple foreground objects without compromising the original photograph content.

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Research paper thumbnail of PatchNet: a patch-based image representation for interactive library-driven image editing

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Research paper thumbnail of Degree reduction of uniform B-spline curves

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Research paper thumbnail of A Marching Method for Computing Intersection Curves of Two Subdivision Solids

Lecture Notes in Computer Science, 2005

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Research paper thumbnail of On the numerical redundancies of geometric constraint systems

Proceedings Ninth Pacific Conference on Computer Graphics and Applications. Pacific Graphics 2001, 2001

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Research paper thumbnail of A matrix-based approach to reconstruction of 3D objects from three orthographic views

Proceedings the Eighth Pacific Conference on Computer Graphics and Applications, 2000

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Research paper thumbnail of Feature sensitive mesh segmentation

Proceedings of the 2006 ACM symposium on Solid and physical modeling - SPM '06, 2006

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Efficient synthesis of gradient solid textures

Graphical Models, 2013

ABSTRACT Solid textures require large storage and are computationally expensive to synthesize. In... more ABSTRACT Solid textures require large storage and are computationally expensive to synthesize. In this paper, we propose a novel solid representation called gradient solids to compactly represent solid textures, including a tricubic interpolation scheme of colors and gradients for smooth variation and a region-based approach for representing sharp boundaries. We further propose a novel approach to directly synthesize gradient solid textures from exemplars. Compared to existing methods, our approach avoids the expensive step of synthesizing the complete solid textures at voxel level and produces optimized solid textures using our representation. This avoids significant amount of unnecessary computation and storage involved in the voxel-level synthesis while producing solid textures with comparable quality to the state of the art. The algorithm is much faster than existing approaches for solid texture synthesis and makes it feasible to synthesize high-resolution solid textures in full. We also propose a novel application—instant editing propagation on full solids.

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Research paper thumbnail of Hidden images

Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Non-Photorealistic Animation and Rendering - NPAR '11, 2011

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Research paper thumbnail of Painting patches: Reducing flicker in painterly re-rendering of video

Science China Information Sciences, 2011

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Research paper thumbnail of Poisson Coordinates

IEEE transactions on visualization and computer graphics, Jan 10, 2012

Harmonic functions are the critical points of a Dirichlet energy functional, the linear projectio... more Harmonic functions are the critical points of a Dirichlet energy functional, the linear projections of conformal maps. They play an important role in computer graphics, particularly for gradient-domain image processing and shape-preserving geometric computation. We propose Poisson coordinates, a novel transfinite interpolation scheme based on the Poisson integral formula, as a rapid way to estimate a harmonic function on a certain domain with desired boundary values. Poisson coordinates are an extension of the Mean Value coordinates (MVCs) which inherit their linear precision, smoothness, and kernel positivity. We give explicit formulae for Poisson coordinates in both continuous and 2D discrete forms. Superior to MVCs, Poisson coordinates are proved to be pseudo-harmonic (i.e., they reproduce harmonic functions on n-dimensional balls). Our experimental results show that Poisson coordinates have lower Dirichlet energies than MVCs on a number of typical 2D domains (particularly convex...

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Research paper thumbnail of Video-based running water animation in Chinese painting style

Science in China Series F: Information Sciences, 2009

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Research paper thumbnail of Video completion using tracking and fragment merging

The Visual Computer, 2005

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Interactive Image-Guided Modeling of Extruded Shapes

Computer Graphics Forum, 2014

ABSTRACT

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Research paper thumbnail of PAST: accurate instrumentation on fully optimized program

ABSTRACT

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Offset Approximation of Loop Subdivision Surfaces

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Stereoscopic image completion and depth recovery

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Polynomials

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A new algorithm for water wave animation

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Motion-Aware Gradient Domain Video Composition

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Aesthetic image enhancement by dependence-aware object recomposition

ABSTRACT This paper proposes an image-enhancement method to optimize photograph composition by re... more ABSTRACT This paper proposes an image-enhancement method to optimize photograph composition by rearranging foreground objects in the photograph. To adjust objects' positions while keeping the original scene content, we first perform a novel structure dependence analysis on the image to obtain the dependencies between all background regions. To determine the optimal positions for foreground objects, we formulate an optimization problem based on widely used heuristics for aesthetically pleasing pictures. Semantic relations between foreground objects are also taken into account during optimization. The final output is produced by moving foreground objects, together with their dependent regions, to optimal positions. The results show that our approach can effectively optimize photographs with single or multiple foreground objects without compromising the original photograph content.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of PatchNet: a patch-based image representation for interactive library-driven image editing

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Degree reduction of uniform B-spline curves

Bookmarks Related papers MentionsView impact