We discuss the problem of pose invariant face recognition using a Markov Random Field (MRF) model. MRF image to image matching has been shown to be very promising in earlier studies (Arashloo and Kittler, 2011) [4]. Its demanding computational complexity has been addressed in Arashloo et al. (2011) [6] by means of multiresolution MRFs linked by the super coupling transform advocated by Petrou e...

While depth of field is an important cinematographic means, its use in real-time computer graphics is still limited by the computational costs that are necessary to achieve a sufficient image quality. Specifically, color bleeding artifacts between objects at different depths are most effectively avoided by a decomposition into sub-images and the independent blurring of each sub-image. This deco...

We participated in the ImageCLEF 2011 Photo Annotation and Wikipedia Image Retrieval Tasks. Our approach to the ImageCLEF 2011 Photo Annotation is based on a kernel weighting procedure using visual Fisher kernels and a Flickr-tag based JensenShannon divergence based kernel. We trained a Gaussian Mixture Model (GMM) to define a generative model over the feature vectors extracted from the image p...

Abstract. The statistics of ice-ridging signatures were studied using high-resolution (1.25 m) and medium-resolution (20 SAR images over the Baltic Sea ice cover, acquired in 2016 2011, respectively. Ice surface profiles measured by 2011 airborne campaign used as validation data. did not delineate well individual ridges linear features. This was assigned to random occurrence ridge rubble arrang...

1077-3142/$ see front matter 2011 Elsevier Inc. A doi:10.1016/j.cviu.2011.10.004 ⇑ Corresponding author. E-mail address: [email protected] (E. Gavves). In this paper, we address the incoherence problem of the visual words in bag-of-words vocabularies. Different from existing work, which assigns words based on closeness in descriptor space, we focus on identifying pairs of independent, distant word...

1077-3142/$ see front matter 2011 Elsevier Inc. A doi:10.1016/j.cviu.2011.12.002 ⇑ Corresponding author. E-mail addresses: [email protected] (L. Ferraz Binefa). Usually, state-of-the-art interest point detectors tend to over-represent the local image structures associating several interest points for each local image structure. This fact avoids interest points to clearly stand out against its...

Fig. 2) Examples of disparity decoding from a natural stereo image pair using different model settings. Each model returns a map of model cell responses (binocular complex cells) tuned to a range of spatial frequencies and orientations. The disparity decoder then sums the responses over orientations and spatial frequencies and returns the value of disparity with maximal summed response. Left) O...

Purpose. To compare the number of image acquisitions and procedural time required for transarterial chemoembolization (TACE) with and without tumor-feeder detection software in cases of hepatocellular carcinoma (HCC). Materials and Methods. We retrospectively reviewed 50 cases involving software-assisted TACE (September 2011-February 2013) and 84 cases involving TACE without software assistance...

OBJECTIVE Our aim was to assess whether mandated completion of an electronic checklist and a quality assurance (QA) process improved obstetric (OB) ultrasound image documentation. STUDY DESIGN A checklist of mandated images based on the American Institute of Ultrasound in Medicine guidelines was created. A baseline QA assessment was performed with a lead senior sonographer reviewing eight ran...