Volume 25, Number 2 (2017) Domovská stránka kolekce Zobrazit statistiky

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Nosova, Svetlana , Snopova, Ludmila , Turlapov, Vadim
Automatic detection of neurons, astrocytes, and layers for NISSL-stained mouse cortex

We present an image processing algorithm for automatic detection of cortex layers and cells from optical microscopy images for Nissl-stained mouse brain. For every layer of cortex we automatically detect a shape and localization of following cortex cells type: neurons of molecula...

Abdulrahman, Hasan , Magnier, Baptiste , Montesinos, Philippe
From contours to ground truth: how to evaluate edge detectors by filtering

Edge detection remains a crucial stage in numerous image processing applications. Thus, an edge detection technique needs to be assessed before use it in a computer vision task. As dissimilarity evaluations depend strongly of a ground truth edge map, an inaccurate datum in&#...

Martín, Rodrigo , Weinmann, Michael , Hullin, Matthias B.
Digital transmission of subjective material appearance

The digital recreation of real-world materials has a substantial role in applications such as product design, on-line shopping or video games. Since decisions in design or shopping are often driven by qualities like “softness” or “beautifulness” of a material (rather than its...

Anjos, Rafael dos , Pereira, João Madeiras , Gaspar, José António , Fernandes, Carla
Multiview layered depth image

Layered Depth Images (LDI) compactly represent multiview images and videos and have widespread usage in image-based rendering applications. In its typical use case scenario of representing a scanned environment, it has proven to be a less costly alternative than separate viewpoint...

Azari, Banafsheh , Bertel, Sven , Wüthrich, Charles A.
Low cost rapid acquisition on bidirectional texture functions for fabrics

Creating photo realistic images from real word complex materials is a great challenge: the reflectance function of materials, especially fabrics, has glossy or specular highlights, reflectance anisotropy and retroreflections. This increases greatly the complexity of rendering. Bidirectional Texture&...

Keul, Kevin , Klee, Nicolas , Müller, Stefan
Soft shadow computation using precomputed line space visibility information

Shadows are one of the most important effects to create realism in rendering. Most real-time applications use some sort of image based technique like shadow mapping. While these techniques are quite fast, they often struggle at rendering realistic and accurate shadows of are...

Lu, Hua , Kpalma, Kidiyo , Ronsin, Joseph
Micro-expression detection using integral projections

Automatic detection of micro-expression from a video is the first step in the micro-expression analysis. In this paper, we present a method addressing the micro-expression detection problem based on the differences in the Integral Projection (IP) of sequential frames. The method ...

Bařina, David , Kula, Michal , Matýšek, Michal , Zemčík, Pavel
Accelerating discrete wavelet transforms on parallel architectures

The 2-D discrete wavelet transform (DWT) can be found in the heart of many image-processing algorithms. Until recently, several studies have compared the performance of such transform on various shared-memory parallel architectures, especially on graphics processing units (GPUs). All these...


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