Roots of Digital Techniques and Functions in Traditional Film Photography Photography is the result of combining several technical discoveries. Chinese philosopher Mo Di and Greek mathematicians Aristotle and Euclid described a pinhole camera in the 5th and 4th centuries BCE. From rudimentary forms like the pinhole camera and the camera obscura, Film and print photography has transformed with t...

Digital airborne cameras play a significant role for aerial Photogrammetry development from analog to full-digital age. Because of the gap between digital sensor performance and Photogrammetry request, digital airborne also becomes the bottleneck of full-digital approach. In this paper, we present a design of twice-imaging airborne camera system with distributed sensors based on film camera, an...

A simple, inexpensive design is presented for the rapid conversion of the popular MD-4 Polaroid land camera to a high quality digital gel documentation system. Images of ethidium bromide stained DNA gels captured using the digital system were compared to images captured on Polaroid instant film. Resolution and sensitivity were enhanced using the digital system. In addition to the low cost and s...

sorting and classification of agricultural products by machine vision system reduce costs and increase quality and accuracy. this research was performed to develop an algorithm and machine vision system for separating dirty and defects eggs and classifying by volume and weight. this machine installed on transport line egg in agriculture included a digital camera, computer and mechanical device ...

The latest progress of IGN's project on digital cameras, that has begun in 1991, are described. The features of the present prototypes are presented. The results of the first attempt to use digital images in IGN production lines are given, either in color with an orthophoto on the city of Rennes, and in panchromatic with a survey over the city of Saumur for the production of IGN's BDTOPO®. The ...

Photographs have significant social roles. For example, they help families and friends to preserve an affective link and provide a support for communication. The increasing popularity of digital photography, combined with global networking, is likely to emphasize this function as sharing photographs will become cheaper, faster and easier. Based on this observation, we propose a framework allowi...