Recently, we have proposed a new image device called gigavision camera whose most important characteristic is that pixels have binary response. The response function of a gigavision sensor is non-linear and similar to a logarithmic function, which makes the camera suitable for high dynamic range imaging. One important parameter in the gigavision camera is the threshold for generating binary pix...

This work deals with the problem of automatically choosing the correct exposure (or integration) time for timeof-flight depth image capturing. We apply methods known from high dynamic range imaging to combine depth images taken with differing integration times in order to produce high quality depth maps. We evaluate the quality of these depth maps by comparing the performance in reconstruction ...

Let S be a set of n points in an [n] grid, such that each point is assigned a color. Given a query range Q = [a1, b1] × [a2, b2] × . . . × [ad, bd], the geometric range mode query problem asks to report the most frequent color (i.e., a mode) of the multiset of colors corresponding to points in S ∩ Q. When d = 1, Chan et al. (STACS 2012 [2]) gave a data structure that requires O(n + (n/∆)/w) wor...

Color imaging systems are continuously improving, and have now improved to the point of capturing high dynamic range scenes. Unfortunately most commercially available color display devices, such as CRTs and LCDs, are limited in their dynamic range. It is necessary to tone-map, or render, the high dynamic range images in order to display them onto a lower dynamic range device. This paper describ...

Multi-exposure fusion(MEF) are techniques to obtain the high dynamic range. One of MEF methods, guided filtering-based fusion(GFF) has good performance for preserving details of original images. However, GFF method considers only details, which causes a problem of missing color information. To solve this problem, we proposed a saliency map-based approach for considering both detail and color in...

Video contents now represent the biggest share of Internet traffic in terms of volume. Nextflix is responsible for 71% of the bandwidth consumed at peak hours in the US, a two-fold increase as compared to 2011, according to the last quarterly report of Sandvine [14]. On average, Netflix consumed 35,2%, followed by YouTube (17,5%) and Amazon Video (4,3%). This heavy trend points toward the need ...

Given the lower bound of (n(d 1)=d) for range query time complexity on n d-dimensional point data, we investigate whether little replication can improve the query and update times significantly. We propose linear-space index structures that minimize the query and update times; the query time we achieve is O(n ) for any > 0, and, the update time is O(logn).

Contrast in image processing is typically scaled using a power function (gamma) where its exponent specifies the amount of the physical contrast change. While the exponent is normally constant for the whole image, we observe that such scaling leads to perceptual nonuniformity in the context of high dynamic range (HDR) images. This effect is mostly due to lower contrast sensitivity of the human ...