The term provenance is traditionally applied to works of art, referring to documentation which relates to the ownership and public visibility of a particular work, but also includes documentation of production, restoration, thefts, expert opinions on condition and valuations, and any other records which help to assess its integrity. In the realm of criminal evidence, the term chain-of-evidence ...

Forensically linking an image to a particular camera can be very useful. In a court of law, the origin of a particular photo may be crucial evidence in a case against child pornographers or industrial espionage. ere are a number of approaches that can be taken, but most have severe issues. Metadata in the header may be lost if the image is saved into a different format and can be easily forged...

We describe a simulation of the complete image processing pipeline of a digital camera, beginning with a radiometric description of the scene captured by the camera and ending with a radiometric description of the image rendered on a display. We show that there is a good correspondence between measured and simulated sensor performance. Through the use of simulation, we can quantify the effects ...

This paper proposes a 3D space distance measuring method to accomplish non-contact 3D space distance measuring by using a digital camera or digital video camera. The measuring principle of the proposed method in this paper is to learn the present camera shooting distance and the horizontal or vertical distance between the given points according to the number of pixels of the image in horizontal...

MEMS technology uses photolithography and etching of silicon wafers to enable mechanical structures with less than 1 um tolerance, important for the miniaturization of imaging systems. In this paper, we present the first silicon MEMS digital auto-focus camera for use in cell phones with a focus range of 10 cm to infinity. At the heart of the new silicon MEMS digital camera, a simple and low-cos...

The identification of image acquisition sources is an important problem in digital image forensics. This paper introduces a new feature-based method for digital camera identification. The method, which is based on an analysis of the imaging pipeline and digital camera processing operations, employs bi-coherence and wavelet coefficient features extracted from digital images. The sequential forwa...

With growing popularity of digital imaging devices and low-cost image editing software, the integrity of image content can no longer be taken for granted. This paper introduces a methodology for forensic analysis of digital camera images, based on the observation that many in-camera and post-camera processing operations leave distinct traces on digital images. We present methods to identify the...

This paper presents a method to reduce the cost of the conventional gel documentation system by employing a much cheaper digital camera instead of the existing expensive one. To adapt the cheaper camera, a computer remote control function which is necessary to the gel document system was added. The gel imaging performance of the camera was qualitatively and quantitatively analyzed in comparison...