We propose a spectral imaging method for piecewise "macropixel" objects, which allows a regular digital camera to be converted into a digital snapshot spectral imager by equipping the camera with only a disperser and a demultiplexing algorithm. The method exploits a "multiplexed spectrum" intensity pattern, i.e., the superposition of spectra from adjacent different image points, formed on the i...

In most digital cameras, and even in high-end digital single lens reflex cameras, the acquired images are sampled at rates below the Nyquist critical rate, causing aliasing effects. This work introduces an algorithm for the subpixel estimation of the point spread function of a digital camera from aliased photographs. The numerical procedure simply uses two fronto-parallel photographs of any pla...

This paper explores the use of camera phones with pen input as a platform for generating digital annotations to realworld objects. We analyze the client-side requirements for a general annotation system that is applicable in mobile as well as stationary settings. We outline ways to create and interact with digital annotations using the camera and pen-based input. Two prototypically implemented ...

Description: The report explains how to acquire, understand, and use real-time digitally generated data for new value creation opportunities through digital data stream generation and aggregation as well as services, efficiency, and analytics. Authors Gabe Piccoli and Federico Pigni also explore why a firm needs capabilities in datasets, toolsets, skillsets, and mindsets to exploit a digital da...

Nowadays, there are various Information Technology (IT) devices but one of the most popular IT devices is the digital camera. Basically, the digital camera is used to capture and store images. The digital images are being stored and reproduced in a way that is quite different from the processing steps of the traditional film because the information is being kept in digital format. The digital d...

In order to acquire quick, high resolution, affordable aerial photographs, an unmanned helium filled airship system equipped with a non-metric digital camera was developed in Chinese Academy of Surveying and Mapping. To meet the potential demand of large scale photogrammetric applications, the non-metric digital camera was calibrated rigourously based on the bundle adjustment with additional pa...

Fish reproduction, recruitment, growth and mortality normally measured using fish length method for identifying the fish species population. Normally researchers in Malaysia buy the fish and measured length of fish one by one using simple fish measuring board made out of hardwood or acrylic plastic. This current method took longest time and very costly. In this paper, the researcher used differ...

Traditional approaches to computer-based presentation require the user to directly control the pre-sentation software using either a keyboard or mouse, distracting the user from the audience. Thispaper presents a self-calibrating camera-projector system that enables the user to control presenta-tions using a standard laser pointer (or other pointing device). A camera-projector syste...

The aim of this study is to assess the impact of sensor size and resolution of different digital camera sensors upon the accuracy and precision of three dimensional data derived by photogrammetry. Kodak DC40, DCS420 and DCS460 digital cameras were used to produce digital images of retroreflective targets in a 4 m three dimensional test field. The image locations of the targeted points were auto...

In this paper we investigate the relationship between matrixing methods, the number of filters adopted and the size of the color gamut of a digital camera. The color gamut is estimated using a method based on the inversion of the processing pipeline of the imaging device. Different matrixing methods are considered, including an original method developed by the authors. For the selection of a hy...