System for extracting a fingerprint data from video/audio signals
First Claim
1. A system for extracting fingerprint data from digitized video images, comprisinga frame buffer for holding a plurality of digitized video images, which receives video images one image at a time by means of data transfers, and discards the oldest video image each time a new video image is added to the buffer, anda sub-sampler which selectively copies pixel values of the video images without any modification to the values, anda plurality of sub-sampler buffers which holds pixel values copied by sub-sampler, and each sub-sampler buffer holds the copied values from a single video image, and the number of sub-sampler buffers is the same as the number of video images in the frame buffer, anda formatter which combines auxiliary information with the data from a plurality of sub-sampler buffers to form a single data package which is called fingerprint data, anda transfer buffer which copies fingerprint data from the formatter to a database.
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Abstract
A system for extracting a fingerprint data from video/audio signals, comprising a frame buffer for storing the video frame images, which accepts a new video frame image and discards the oldest video frame image in a first in first out (FIFO) fashion; a sub-sampler for sampling the video images, which operates on one video frame image at a time, so that the output of the sub-sampler contains data samples obtained from multiple video frame images while the video image content itself is discarded, and after each video frame image is sampled at the head of the frame buffer, it is discarded after the sampling; a divider through which the data samples go, in order to divide the data samples into groups of video frames so as to be organized as one fingerprint segment after another one; a formatter which incorporates optional information to the fingerprint segment so as to form the fingerprint data, and at the output of the formatter, the video image content is discarded, only the fingerprint data and the associated optional information remain; and a transfer buffer which transfers the fingerprint data and the associated optional information by to the fingerprint database. According to the present invention, the system for extracting a fingerprint data from video/audio signals facilitates the automatic identification, archiving and search of video content without the need for human visual inspections.
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Citations
5 Claims
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1. A system for extracting fingerprint data from digitized video images, comprising
a frame buffer for holding a plurality of digitized video images, which receives video images one image at a time by means of data transfers, and discards the oldest video image each time a new video image is added to the buffer, and a sub-sampler which selectively copies pixel values of the video images without any modification to the values, and a plurality of sub-sampler buffers which holds pixel values copied by sub-sampler, and each sub-sampler buffer holds the copied values from a single video image, and the number of sub-sampler buffers is the same as the number of video images in the frame buffer, and a formatter which combines auxiliary information with the data from a plurality of sub-sampler buffers to form a single data package which is called fingerprint data, and a transfer buffer which copies fingerprint data from the formatter to a database.
Specification