نتایج جستجو برای: flatbed scanner
تعداد نتایج: 19980 فیلتر نتایج به سال:
In this paper, we address the problem of acquiring bidirectional texture functions (BTFs) of large-scale material samples. Our approach fuses gonioreflectometric measurements of small samples with few constraint images taken on a flatbed scanner under semi-controlled conditions. Underlying our method is a lightweight texture synthesis scheme using a local texture descriptor that combines shadin...
During the past decade a few artists and even fewer entomologists discovered flatbed scanning technology, using extreme resolution graphical arts scanners for acquiring high magnification digital images of plants, animals and inanimate objects. They are not just for trip receipts anymore. The special attributes of certain scanners, to image thick objects is discussed along with the technical fe...
We propose to extend the use of a digital camera to a new application, which consists basically in transforming it into a flatbed scanner. Our approach consists in simulating the flattening of warped documents, by means of computer vision techniques. In particular, with regard to the digitization of a book, we show that the drawbacks related to the use of a scanner can be bypassed. The correcti...
We describe a system for transforming an off-the-shelf flatbed scanner into a $200 scan backend for large format cameras. While we describe both software and hardware aspects, the focus of the paper is on software issues such as color calibration and removal of scanner artifacts. With current scanner technology, the resulting camera system is capable of taking black&white, color, or near-infrar...
This article presents a proof-of-concept illustrating the feasibility of creating a covert channel between a C&C server and a malware installed in an organization by exploiting an organization’s scanner and using it as a means of interaction. We take advantage of the light sensitivity of a flatbed scanner, using a light source to infiltrate data to an organization. We present an implementation ...
The post-exposure density growth (PEDG) is one of the characteristics of radiochromic film (RCF). In film dosimetry using RCF and a flatbed scanner, pixel values read out from the RCF are converted to dose (hereafter, film dose) by using a calibration curve. The aim of this study is to analyze the relationship between the pixel value read out from the RCF and the PEDG, and that between the film...
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