Yannick Morvan

Yannick Morvan
Stryker Corporation

PhD

About

36
Publications
7,169
Reads
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907
Citations
Additional affiliations
February 2016 - present
Wright Medical Technology, Inc.
Position
  • Lower Extremity Product Owner
October 2013 - January 2016
IRT B-com
Position
  • Laboratory Manager
February 2008 - September 2013
Philips
Position
  • Researcher

Publications

Publications (36)
Conference Paper
Full-text available
Since the invention of the Patient-Specific Instruments (PSIs), they became the modern way to assist the surgeon in performing femur and tibia resection in Total Knee Arthroplasty (TKA). However, enable to have an accurate PSI, an accurate reconstruction of the surface of the knee bones is crucial. In this work, we introduce a new solution to build...
Article
Full-text available
Purpose Unexplained pain and stiffness after total knee arthroplasty (TKA) often result from mismatch between implant geometry and knee morphology, which depends on patient size, sex, and ethnicity. This study aimed to determine whether size, sex, or ethnicity are independently associated with distal femoral morphology in healthy Caucasian and Asia...
Conference Paper
Full-text available
Patient Specific Instruments (PSI) are widely employed in orthopedic surgery to improve the precision of the bone cuts. However, designing these PSIs requires either preoperative Computerized Tomography (CT) or Magnetic Resonance (MR) data. In this paper, we propose a new 3D bone reconstruction method combining 3D ultrasound images with the so-call...
Conference Paper
Full-text available
Heterogeneity image-derived features of Glioblastoma multiforme (GBM) tumors from multimodal MRI sequences may provide higher prognostic value than standard parameters used in routine clinical practice. We previously developed a framework for automatic extraction and combination of image-derived features (also called “Radiomics”) through support ve...
Conference Paper
Heterogeneity image-derived features of Glioblastoma multiforme (GBM) tumors from multimodal MRI sequences may provide higher prognostic value than standard parameters used in routine clinical practice. We previously developed a framework for automatic extraction and combination of image-derived features (also called “Radiomics”) through support ve...
Conference Paper
Full-text available
The importance of imaging biomarkers in biomedical research and drug design is well-acknowledged in the literature, calling for appropriate standards and guidelines for imaging biomarker development , validation and qualification. The objective of this work is to define explicitly, by means of an ontology, the vocabulary pertaining to imaging bioma...
Conference Paper
In Glioblastoma Multiforme (GBM) image-derived features (“radiomics”) could help in individualizing patient management. Simple geometric features of tumors (necrosis, edema, active tumor) and first-order statistics in Magnetic Resonance Imaging (MRI) are used in clinical practice. However, these features provide limited characterization power becau...
Conference Paper
Image-derived features ('radiomics') are increasingly being considered for patient management in (neuro)oncology and radiotherapy. In Glioblastoma multiforme (GBM), simple features are often used by clinicians in clinical practice, such as the size of the tumor or the relative sizes of the necrosis and active tumor. First order statistics provide a...
Conference Paper
Full-text available
Increasingly, physicians have to access clinical images distributed over multiple healthcare organizations. To this end, two DICOM protocols may be used: a regular DICOM C-STORE transaction or an HTTP-based DICOM request such as WADO or STOW. A major problem of the DICOM C-STORE transaction is that it is inefficient to transfer DICOM data sets that...
Chapter
Free-ViewPoint (FVP) interpolation allows creating a new view between the existing reference views. Applied to 3D multi-view video sequences, it leads to two important applications: (1) FVP service provided to the user, which enables the possibility to interactively select the viewing point of the scene; (2) improved compression of multi-view video...
Chapter
The increasing popularity of stereoscopic cinema and television paves the way for more advanced stereoscopic technologies, such as high-resolution multi-view autostereoscopic displays. The amount of information conveyed by such displays surpasses, however, the bandwidth capacity of the current broadcasting infrastructure. In this chapter, we will f...
Conference Paper
This paper evaluates our 3D view interpolation rendering algorithm and proposes a few performance improving techniques. We aim at developing a rendering method for free-viewpoint 3DTV, based on depth image warping from surrounding cameras. The key feature of our approach is warping texture and depth in the first stage simultaneously and postpone bl...
Thesis
Full-text available
Three-dimensional (3D) video and imaging technologies is an emerging trend in the development of digital video systems, as we presently witness the appearance of 3D displays, coding systems, and 3D camera setups. Three-dimensional multi-view video is typically obtained from a set of synchronized cameras, which are capturing the same scene from diff...
Article
This article investigates the interaction between different techniques for depth compression and view synthesis rendering with multiview video plus scene depth data. Two different approaches for depth coding are compared, namely H.264/MVC, using temporal and inter-view reference images for efficient prediction, and the novel platelet-based coding a...
Article
Full-text available
This paper presents a system architecture of an acquisition, compression and rendering system for 3D- TV and free-viewpoint video applications. We show that the proposed system yields two distinct advantages. First, it achieves an efficient compression of 3D/multi-view video by extending a standard H.264 encoder such that near backward compatibilit...
Conference Paper
This paper presents a comparative study on different techniques for depth-image compression and its implications on the quality of multiview video plus depth virtual view rendering. A novel coding algorithm for depth images that concentrates on their special characteristics, namely smooth regions delineated by sharp edges, is compared to H.264 intr...
Conference Paper
Full-text available
This paper evaluates our 3D view interpolation rendering algorithm and proposes a few performance improving techniques. We aim at developing a rendering method for free-viewpoint 3DTV, based on depth image warping from surrounding cameras. The key feature of our approach is warping texture and depth in the first stage simultaneously and postpone bl...
Conference Paper
This paper presents an architecture of an acquisition, compression and rendering system for 3D-TV. We show that the proposed system yields two distinct advantages. First, it achieves an efficient compression of 3D/multi-view video by extending a standard H.264 encoder such that near backward compatibility is retained. Second, a high-quality 3D rend...
Conference Paper
This paper presents a novel depth-image coding algorithm that concentrates on the special characteristics of depth images: smooth regions delineated by sharp edges. The algorithm models these smooth regions using piecewise-linear functions and sharp edges by a straight line. To define the area of support for each modeling function, we employ a quad...
Conference Paper
Full-text available
We investigate the coding of multiview images obtained from a set of multiple cameras. To exploit the inter-view correlation, two view-prediction tools have been implemented and used in parallel: a block-based motion compensation scheme and a depth image based rendering technique (DIBR). Whereas DIBR relies on an accurate depth image, the block-bas...
Conference Paper
Full-text available
This paper presents a predictive-coding algorithm for the compression of multiple depth-sequences obtained from a multi-camera acquisition setup. The proposed depth-prediction algorithm works by synthesizing a virtual depth-image that matches the depth-image (of the predicted camera). To generate this virtual depth-image, we use an image-rendering...
Conference Paper
Full-text available
A 3D video stream is typically obtained from a set of synchronized cameras, which are simultaneously capturing the same scene (multiview video). This technology enables applications such as free-viewpoint video which allows the viewer to select his preferred viewpoint, or 3D TV where the depth of the scene can be perceived using a special display....
Conference Paper
Full-text available
Emerging 3-D displays show several views of the scene simultaneously. A direct transmission of a selection of these views is impractical, because various types of displays support a different number of views and the decoder has to interpolate the intermediate views. The transmission of multiview image information can be simplified by only transmitt...
Conference Paper
Full-text available
Multi-View display technology allows the presentation of a D video by showing simultaneously several views of the same scene. One approach to render these multiple views is to synthesize novel views using a Depth Image Based Render- ing (DIBR) algorithm. Consequently, for the efficient trans- mission of D video signals, the compression of texture a...
Conference Paper
Full-text available
This paper presents an algorithm for interpolating interme-diate views along a chain of cameras. There is no restriction on the camera placement as long as the distance between successive cameras is not too large. The interpolated views lie on a virtual poly-line defined by the (ordered) set of cam-eras. Our algorithm requires no strong camera cali...
Conference Paper
A D video stream typically consists of a set of views capturing simultaneously the same scene. For an ecient transmission of the 3D video, a compression technique is required. In this paper, we describe a coding architecture and ap- propriate algorithms that enable the compression and reconstruction of views at the decoder. We explore the concept o...
Conference Paper
An efficient way to transmit multi-view images is to send the texture image together with a corresponding depth image. The depth image specifies the distance between each pixel and the camera. With this information, arbitrary views can be generated at the decoder. In this paper, we propose a new algorithm for the coding of depth images that provide...
Conference Paper
Full-text available
An efficient way to transmit multi-view images is to send a single texture image together with a corresponding depth-map. The depth-map specifies the distance between each pixel and the camera. With this information, arbitrary 3-D views can be generated at the decoder. In this paper, we propose a new algorithm for the coding of depth-maps that prov...
Conference Paper
Full-text available
The key aspect of Matching Pursuit is that the video signal can be represented with less coefficients than with an orthogonal transform, due to the over-complete set of basis functions. This paper describes how Matching Pursuit can be employed in an MPEG-4 video encoder as a replacement for the Discrete Cosine Transform (DCT) at boundary-blocks to...
Article
This paper describes how Matching Pursuit can be em- ployed in an MPEG-4 video encoder as a replacement for the DCT at boundary-blocks to improve coding efficiency, while retaining backward compatibility. The key aspect of Matching Pursuit is that the video signal can be represented with less coefficients than with an orthogonal transform, due to t...
Article
Smart camera systems are systems where the camera has embedded intelligence, i.e., the camera can make autonomous decisions on objects in the scene. Such as unidentified persons entering a space or a collision at progress, or more generally the occurrence of dangerous situations. My work is part of the Xetal Project. Xetal is a Digital Signal Proce...
Technical Report
Full-text available
Reliable object tracking at video speed is a task that requires high performance. We have analyzed the various parts of typical algorithms and found that some parts of program ows are best performed on a parallel platform for performance reasons and other parts are better performed on a sequential processor for reliability and versatility reasons....
Article
Full-text available
An efficient way to transmit multi-view images is to send the texture image together with a corresponding depth-map. The depth-map specifies the distance between each pixel and the camera. With this information, arbitrary views can be gen-erated at the decoder. This technique requires a compression technique for the depth-maps. Ordinary image compr...

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