Thomas Leung

Publication List Details

Period

1996 - 2008

Number

29

Co-Authors

Context-aided Human Recognition- Clustering (2008)

Yang Song, Thomas Leung

Abstract. Context information other than faces, such as clothes, picturetaken-time and some logical constraints, can provide rich cues for recognizing people. This aim of this work is to...

c ○ 2001 Kluwer Academic Publishers. Manufactured in The Netherlands. Contour and Texture Analysis for Image Segmentation (2007)

Jitendra Malik, Serge Belongie, Thomas Leung, Jianbo Shi

Abstract. This paper provides an algorithm for partitioning grayscale images into disjoint regions of coherent brightness and texture. Natural images contain both textured and untextured regions, so...

scene elements from an image (2007)

Thomas Leung, Jitendra Malik

emaih leungtcs.berkeley. edu, malikcs.berkeley.edu Abstract. This paper presents an algorithm for detecting, localizing and grouping instances of repeated scene elements. The grouping is represented...

Representing and recognizing the visual appearance of materials using three-dimensional textons (2001)

Thomas Leung, Jitendra Malik

Abstract. We study the recognition of surfaces made from different materials such as concrete, rug, marble, or leather on the basis of their textural appearance. Such natural textures arise from...

Self-calibrating cameraprojector systems for interactive displays and presentations”, Computer Vision, and ICCV (2001)

Rahul Sukthankar, Tat-jen Cham, Gita Sukthankar, Jim Rehg, David Hsu, Thomas Leung

We demonstrate a self-calibrating system that employs uncalibrated cameras and microportable projectors to create novel interactive displays and presentations. 1 Three benefits

Contour and Texture Analysis for Image Segmentation (2001)

Jitendra Malik, Serge Belongie, Thomas Leung, Jianbo Shi

. This paper provides an algorithm for partitioning grayscale images into disjoint regions of coherent brightness and texture. Natural images contain both textured and untextured regions, so the cues...

Self-calibrating cameraprojector systems for interactive displays and presentations”, Computer Vision, and ICCV (2001)

Rahul Sukthankar, Tat-jen Cham, Gita Sukthankar, Jim Rehg, David Hsu, Thomas Leung

We demonstrate a self-calibrating system that employs un-calibrated cameras and microportable projectors to create novel interactive displays and presentations. ’ Three bene-

Textons, Contours and Regions: Cue Integration in Image Segmentation (1999)

Jitendra Malik, Serge Belongie, Jianbo Shi, Thomas Leung

This paper makes two contributions. It provides (1) an operational definition of textons, the putative elementary units of texture perception, and (2) an algorithm for partitioning the image into...

Recognizing Surfaces Using Three-Dimensional Textons (1999)

Thomas Leung, Jitendra Malik

We study the recognition of surfaces made from different materials such as concrete, rug, marble or leather on the basis of their textural appearance. Such natural textures arise from spatial...

Texture Synthesis by Non-parametric Sampling (1999)

Alexei Efros, Thomas Leung

A non-parametric method for texture synthesis is proposed. The texture synthesis process grows a new image outward from an initial seed, one pixel at a time. A Markov random field model is assumed,...

Textons, contours and regions: Cue integration in image segmentation (1999)

Jitendra Malik, Serge Belongie, Jianbo Shi, Thomas Leung

This paper makes two contributions. It provides (1) an operational definition of textons, the putative elementary units of texture perception, and (2) an algorithm for partitioning the image into...

Image And Video Segmentation: The Normalized Cut Framework (1998)

Jianbo Shi, Serge Belongie, Thomas Leung, Jitendra Malik

In this paper, we propose a segmentation system based on the normalized cut framework proposed by Shi and Malik (1997). The goal is to partition the image from a big picture point of view....

Contour Continuity in Region Based Image Segmentation (1998)

Thomas Leung, Jitendra Malik

. Region-based image segmentation techniques make use of similarity in intensity, color and texture to determine the partitioning of an image. The powerful cue of contour continuity is not exploited...

Probabilistic Affine Invariants for Recognition (1998)

Thomas Leung, Michael C. Burl, Pietro Perona

Under a weak perspective camera model, the image plane coordinates in different views of a planar object are related by an affine transformation. Because of this property, researchers have attempted...

On perpendicular texture or: Why do we see more flowers in the distance (1997)

Thomas Leung, Jitendra Malik

Almost all work on texture in the computer vision and graphics communities has modeled the texture as tangential, i.e. lying in the tangent plane to the surface. This is equivalent to thinking of the...

On Perpendicular Texture or: Why do we see more flowers in the distance? (1997)

Thomas Leung, Jitendra Malik

Almost all work on texture in the computer vision and graphics communities has modeled the texture as tangential, i.e. lying in the tangent plane to the surface. This is equivalent to thinking of the...

Detecting, Localizing and Grouping Repeated Scene Elements From an Image (1996)

Thomas Leung, Jitendra Malik

. This paper presents an algorithm for detecting, localizing and grouping instances of repeated scene elements. The grouping is represented by a graph where nodes correspond to individual elements...

Finding Pictures of Objects in Large Collections of Images (1996)

David A. Forsyth, Jitendra Malik, Margaret M. Fleck, Hayit Greenspan, Thomas Leung, Serge Belongie, ...

. Retrieving images from very large collections, using image content as a key, is becoming an important problem. Users prefer to ask for pictures using notions of content that are strongly oriented...

Intermolecular and Intramolecular Interactions Regulate Catalytic Activity of Myotonic Dystrophy Kinase-Related Cdc42-Binding Kinase α

Tan, Ivan, Seow, Kah Tong, Lim, Louis, Leung, Thomas

Myotonic dystrophy kinase-related Cdc42-binding kinase (MRCK) is a Cdc42-binding serine/threonine kinase with multiple functional domains. We had previously shown MRCKα to be implicated in...

RhoA-Binding Kinase α Translocation Is Facilitated by the Collapse of the Vimentin Intermediate Filament Network

Sin, Wun-Chey, Chen, Xiang-Qun, Leung, Thomas, Lim, Louis

The regulation of morphological changes in eukaryotic cells is a complex process involving major components of the cytoskeleton including actin microfilaments, microtubules, and intermediate...

A Conserved Negative Regulatory Region in αPAK: Inhibition of PAK Kinases Reveals Their Morphological Roles Downstream of Cdc42 and Rac1

Zhao, Zhou-Shen, Manser, Edward, Chen, Xiang-Qun, Chong, Claire, Leung, Thomas, Lim, Louis

αPAK in a constitutively active form can exert morphological effects (E. Manser, H.-Y. Huang, T.-H. Loo, X.-Q. Chen, J.-M. Dong, T. Leung, and L. Lim, Mol. Cell. Biol. 17:1129–1143, 1997)...

Myotonic Dystrophy Kinase-Related Cdc42-Binding Kinase Acts as a Cdc42 Effector in Promoting Cytoskeletal Reorganization

Leung, Thomas, Chen, Xiang-Qun, Tan, Ivan, Manser, Edward, Lim, Louis

The Rho GTPases play distinctive roles in cytoskeletal reorganization associated with growth and differentiation. The Cdc42/Rac-binding p21-activated kinase (PAK) and Rho-binding kinase (ROK) act as...

Intermolecular and Intramolecular Interactions Regulate Catalytic Activity of Myotonic Dystrophy Kinase-Related Cdc42-Binding Kinase α

Tan, Ivan, Seow, Kah Tong, Lim, Louis, Leung, Thomas

Myotonic dystrophy kinase-related Cdc42-binding kinase (MRCK) is a Cdc42-binding serine/threonine kinase with multiple functional domains. We had previously shown MRCKα to be implicated in...

RhoA-Binding Kinase α Translocation Is Facilitated by the Collapse of the Vimentin Intermediate Filament Network

Sin, Wun-Chey, Chen, Xiang-Qun, Leung, Thomas, Lim, Louis

The regulation of morphological changes in eukaryotic cells is a complex process involving major components of the cytoskeleton including actin microfilaments, microtubules, and intermediate...

A Conserved Negative Regulatory Region in αPAK: Inhibition of PAK Kinases Reveals Their Morphological Roles Downstream of Cdc42 and Rac1

Zhao, Zhou-Shen, Manser, Edward, Chen, Xiang-Qun, Chong, Claire, Leung, Thomas, Lim, Louis

αPAK in a constitutively active form can exert morphological effects (E. Manser, H.-Y. Huang, T.-H. Loo, X.-Q. Chen, J.-M. Dong, T. Leung, and L. Lim, Mol. Cell. Biol. 17:1129–1143, 1997)...

Myotonic Dystrophy Kinase-Related Cdc42-Binding Kinase Acts as a Cdc42 Effector in Promoting Cytoskeletal Reorganization

Leung, Thomas, Chen, Xiang-Qun, Tan, Ivan, Manser, Edward, Lim, Louis

The Rho GTPases play distinctive roles in cytoskeletal reorganization associated with growth and differentiation. The Cdc42/Rac-binding p21-activated kinase (PAK) and Rho-binding kinase (ROK) act as...

Raf-1 regulates Rho signaling and cell migration

Ehrenreiter, Karin, Piazzolla, Daniela, Velamoor, Vanishree, Sobczak, Izabela, Small, J. Victor, Takeda, Junji, ...

Raf kinases relay signals inducing proliferation, differentiation, and survival. The Raf-1 isoform has been extensively studied as the upstream kinase linking Ras activation to the MEK/ERK module....

Activated ras Prevents Downregulation of Bcl-XL Triggered by Detachment from the Extracellular Matrix: A Mechanism of ras-Induced Resistance to Anoikis in Intestinal Epithelial Cells

Rosen, Kirill, Rak, Janusz, Leung, Thomas, Dean, Nicholas M., Kerbel, Robert S., Filmus, Jorge

Detachment of epithelial cells from the extracellular matrix (ECM) results in a form of apoptosis often referred to as anoikis. Transformation of intestinal epithelial cells by oncogenic ras leads to...