Download High Dynamic Range Imaging: Acquisition, Display, and by Erik Reinhard PDF

By Erik Reinhard

Excessive dynamic variety imaging produces photographs with a far larger diversity of sunshine and colour than traditional imaging. The impact is gorgeous, as nice because the distinction among black-and-white and colour tv. excessive Dynamic variety Imaging is the 1st ebook to explain this intriguing new box that's reworking the media and leisure industries. Written through the most important researchers in HDRI, it's going to clarify and outline this new expertise for someone who works with photos, if it is for special effects, movie, video, images, or lights design.
* Written by way of the top researchers in HDRI
* Covers the entire components of excessive dynamic diversity imaging together with trap units, reveal units, dossier codecs, dynamic diversity aid, and image-based lighting
* encompasses a DVD with over four GB of HDR pictures in addition to resource code and binaries for varied tone replica operators for home windows, Linux, and Mac OS X

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Additional info for High Dynamic Range Imaging: Acquisition, Display, and Image-Based Lighting

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After light is absorbed by the photoreceptors, a significant amount of processing occurs in the next several layers of cells before the signal leaves the eye. One type of processing is a color space transformation to a color opponent space. Such a color space is characterized by three channels; a luminance channel, a red-green channel, and a yellow-blue channel. The luminance channel ranges from dark to light and bears resemblance to the Y channel in CIE XYZ color space. The red-green channel ranges from red to green via neutral gray.

During that time, light is focused through a lens that limits the number of directions from which light is received. The image sensor is partitioned into small pixels, so that each pixel records light over a small area. The light recorded by a pixel may be modeled by the “measurement equation” (see, for example, [66] for details). Because a camera records radiance, it is therefore possible to relate the voltages extracted from the camera sensor to radiance, provided pixels are neither under- nor overexposed [104,105].

32 CHAPTER 02. 10 CIE xy chromaticity diagram showing the range of colors humans can distinguish (left). 709 color space [57] is shown. within a given system of primary stimuli two colors with the same relative spectral power distribution will map to the same chromaticity coordinates. An equal-energy stimulus will map to coordinates (x = 1/3, y = 1/3). Chromaticity coordinates may be plotted in a chromaticity diagram with two axes. 10. All monochromatic wavelengths map to a position along the curved boundary, called the spectral locus, which is of horseshoe shape.

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