نتایج جستجو برای: weili dynamic
تعداد نتایج: 406050 فیلتر نتایج به سال:
The real world encompasses a high range of luminances. In order to capture and represent this range correctly, High Dynamic Range (HDR) imaging techniques are introduced. Some of these techniques are based on constructing an HDR image from several Low Dynamic Range (LDR) images with different exposures. In the capture and reconstruction phases, the HDR reproduction techniques must resolve the d...
The ability of High Dynamic Range (HDR) imaging to capture the full range of lighting in a scene has prompted an increase in its use for Cultural Heritage (CH) applications. Photogrammetric techniques allow the semi-automatic production of three-dimensional (3D) models from a sequence of images. Current photogrammetric methods are not always effective in reconstructing images under harsh lighti...
In this paper we present a CMOS image sensor design with a high dynamic range. This feature is achieved by a two-frame scheme, in which an image is captured twice with different sensitivity levels. One of them focuses on the low light intensity part of the image, while the other focuses on the high light intensity part. After proper composition, these two frames are then combined as a single im...
An important consideration for any digital 03 image is how to store it. This is especially true for high dynamic range (HDR) images, which record a much wider gamut than standard 24-bit RGB, and therefore require an efficient encoding to avoid taking up an excess of disk space and network bandwidth. Fortunately, several HDR file encodings and formats have already been developed by the graphics ...
We propose a novel 3D wavelet based tone mapping framework for high dynamic range videos. Still image tone mapping methods can be applied to videos in a frame by frame fashion, but they often exhibit haloing artifacts and do not guarantee temporal coherence, resulting in flickering. Directly extending wavelet analysis/synthesis to time solves the flickering problem but leads to ghosting. Our me...
In last years, many modulus sets in the Residue Number System (RNS) for increasing Dynamic Range (DR) and parallelism are presented. Hence, for reach these purposes a new 5-Moduli Set for even n, and its efficient reverse converter design are introduced in this paper. This modulus set contains pair-wise relatively prime, and it offers the maximum feasible DR. New CRT-I and MRC are used to obtai...
We present a new approach for improving the effective dynamic range of cameras by using multiple photographs of the same scene taken with different exposure times. Using this method enables the photographer to accurately capture scenes that contain high dynamic range by using a device with low dynamic range, which allows the capture of scenes that have both very bright and very dark regions. We...
Although HDR content processing, coding and quality assessment have been largely addressed in the last few years, little to no work has been concentrating on how to assess quality in HDR for 360◦ or omnidirectional content. This paper is an attempt to answer to various questions in this direction. As a minimum, a new data set for 360◦ HDR content is proposed and a new methodology is designed to...
Seven tone mapping methods currently available to display high dynamic range images were submitted to perceptual evaluation in order to nd the attributes most predictive of the success of a robust all-around tone mapping algorithm. The two most salient Stimulus Space dimensions underlying the perception of a set of images produced by six of the tone mappings were revealed using INdividual Di er...
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