Digital camera

About: Digital camera is a research topic. Over the lifetime, 12169 publications have been published within this topic receiving 137431 citations. The topic is also known as: digicam & digital still camera.

Simultaneous multiple field of view digital cameras

Abstract: Digital camera systems and methods are described that provide digital cameras configured to simultaneously acquire image data via multiple channels having different fields of view. The digital cameras include multiple channels coupled to a processing component. Each channel includes an optics component and an array of sensors or photo-detectors integrated on a semiconductor substrate. The channels include a first channel having a first field of view (FOV) and a second channel having a second FOV, and the second FOV is different than the first FOV. The processing component is configured to independently control simultaneous data acquisition with each of the channels, and to combine data from at least one channel during a frame to provide a high resolution image.

Digital camera with biometric security

Abstract: A programmable digital camera requiring a programming password to be entered to access the camera's programmability. The camera further includes programming so as to allow the camera to be operated only for a specified time interval, after which the camera becomes inoperable until the programming password is again entered and the camera is programmed to operate for another interval of time. An alternate embodiment of the invention includes a programmable digital camera as above described wherein the camera is programmed to only capture a set number of images, at which point the programming password must again be entered and the camera reset for another quantity of images. A further alternate embodiment includes a camera system with a separate transmitter for radiating a signal designed to cover a designated area, the signal being modulated with a camera operational code. The camera is equipped with a corresponding receiver and demodulator to receive the operational code. The camera is programmed to check for the operational code periodically, and if the code is not received, the camera automatically shuts down, thereby limiting operation of the camera to the designated area. A still further embodiment includes a camera with a built-in apparatus for acquiring measured biometric data of a potential user, and comparing it with corresponding biometric signature data entered in the camera, and allowing camera operation only if there is a match.

Using sensor pattern noise for camera model identification

Abstract: Sensor photo-response non-uniformity (PRMJ) was introduced by Lukas et al. [1] to solve the problem of digital camera sensor identification. The PRNU is the main component of a camera fingerprint that can reliably identify a specific camera. This fingerprint can be estimated from multiple images taken by the camera. In this paper, we demonstrate that the same fingerprint can be used for identification of camera brand and model. This is possible due to the fact that fingerprints estimated from images in the TIFF/JPEG format contain local structure due to various in-camera processing that can be detected by extracting a set of numerical features from the fingerprints and classifying them using pattern classification methods. We estimate and classify fingerprints for more than 4500 digital cameras spanning 8 different brands and 17 models. The average probability of correctly classified camera brand was 90.8%.

System and method for focusing a digital camera

Abstract: A method of focusing a digital camera module with an image sensor including capturing an image of a test target with the digital camera module, determining a focus quality of the image with the image sensor, outputting a signal related to the focus quality of the image from the digital camera module to a focusing station external to the digital camera module, and determining whether a position of a lens from the image sensor within the digital camera module should be altered to improve a focus quality of subsequently captured images.