In this article we investigate 'real-time' watermarking of single-sensor digital camera images (often called 'raw' images) and blind watermark detection in demosaicked images. We describe the software-only implementation of simple additive spread-spectrum embedding in the firmware of a digital camera. For blind watermark detection, we develop a scheme which adaptively combines the polyphase com...

In this paper we investigate ‘real-time’ watermarking of singlesensor digital camera images (often called ‘raw’ images) and blind watermark detection in demosaicked images. We describe the software-only implementation of simple additive spread-spectrum embedding in the firmware of a digital camera. For blind watermark detection, we develop a scheme which adaptively combines the polyphase compon...

Cameras are more and more common in mobile phones and this creates new opportunities and threats to digital watermarking. We discuss about the difficulties that occur while reading a watermark with a digital camera or a camera phone and what kind of applications and technical solutions have already been invented. Not much research has been done on this field but commercial applications have alr...

Trichromatic digital camera has been used for spectral imaging, but spectral reconstructive accuracy is poor if actual digital responses are directly used in linear imaging model. The linearity of Nikon D700 is analyzed, and a new radiation intensity-based linearization technique is put forward, whose performance is verified and compared with other linearization methods. For nonlinear imaging s...

Background Fourteen African countries have no radiologists, and in others few radiologists work in rural areas. Teleradiology provides advice to doctors in remote settings but cost and poor internet connections limit its use. This study builds on several previous studies evaluating scanners and digital cameras for low-cost teleradiology. Digital camera images can be attached to emails and sent ...

INTRODUCTION Wound surface area measurement is important as therapeutic decisions may depend on the change of wound surface area over time. Digital planimetry is a popular technique in wound area measurement. It is accurate and repeatable when calibration is performed with 2 rulers placed at opposite sides of a wound. The aim of the current study was improving accuracy and precision of wound ar...

This paper discusses the design, development, testing, and demonstration of a highly miniaturized, battery operated, digital wireless camera. The miniature wireless camera receives commands transmittedfrom a remote base station requesting it to take one or more frames of data, and broadcasts the digital image data to the base station receiver for display. The camera uses a complementary metal-o...

OBJECTIVE This study aimed to compare digital camera assessment of the reproductive tract (DART) to colposcopy for the evaluation of abnormal Pap smears. MATERIALS AND METHODS Participants included 207 women with abnormal Pap smears. Colposcopy and DART were performed on each patient by separate examiners with the goal of lesion detection. Analysis was performed per patient and per biopsy. ...

We develop protocols for an authenticated camera that allows people to verify that a given digital image was taken by a specific camera at a specific time and specific place. These protocols require interaction between the camera and base station both before and after a series of images are

In recent years a massive research and development effort has been witnessed in color imaging technologies in both the industry and the ordinary life. Color is commonly used in television, computer displays, cinema motion pictures, print, and photographs. In all these application areas the perception of color is paramount for the correct understanding and dissemination of the visual information...