Digital security camera

摘要

The systems and methods described herein provide imaging systems for imaging a scene. The imaging system includes an optical head, a processor, and an analog communication port. The processor receives captured digital image data from the optical head. The processor sends the image data to the analog communication port to generate an analog video stream that is protocol compatible with typical closed-circuit television (CCTV) networks, such as PAL or NTSC. The imaging system has a physical interface that allows the system to plug into a conventional CCTV network. To generate a video stream that is protocol compatible with the CCTV network, the analog communication port may down sample the digital image data to generate a PAL or NTSC compatible image. The down sampled digital image data is converted to a compliant analog signal and delivered over the physical layer of the CCTV network for display on a conventional television monitor.

主权项

1. A system for imaging a scene, comprising
an optical head having a plurality of digital imaging sensors, wherein:
each digital imaging sensor of the plurality of digital imaging sensors generates image data,the plurality of digital imaging sensors includes a first digital imaging sensor having a first field of view and a second digital imaging sensor having a second field of view, andthe plurality of digital imaging sensors is arranged such that the first field of view of the first digital imaging sensor at least partially overlaps the second field of view of the second digital imaging sensor; a processor connected to the optical head and having circuitry for receiving image data from each digital imaging sensor in the plurality of digital imaging sensors, wherein the processor is configured for:
determining a first exposure value for the first imaging sensor and a second exposure value for the second imaging sensor,determining, based on the first and second exposure values, a plurality of interpolated exposure values, wherein each interpolated exposure value of the plurality of interpolated exposure values corresponds to a column of photosensitive elements disposed between the center of the first imaging sensor and the center of the second imaging sensor,modifying a first image corresponding to the first imaging sensor and a second image corresponding to the second imaging sensor based on the plurality of interpolated exposure values, andgenerating an output digital image based on at least the modified first and second images; and an analog communication port for converting the output digital image into an analog data stream suitable for delivery over an analog data path.