Method for generating and storing picture data in compressed and decompressed format for use in traffic monitoring
First Claim
1. A method of generating and storing picture data representing a traffic scene in a compressed and decompressed format in a data storing memory of a traffic monitoring arrangement having a digital camera, said method comprising the steps of:
- generating a picture of a traffic scene by means of said digital camera of the traffic monitoring arrangement, so as to generate uncompressed picture data representing said traffic scene;
dividing said uncompressed picture data of the traffic scene into a plurality of data segments, so as to designate in said uncompressed picture data a location of at least one area of the traffic scene as a compression segment and a location of at least one other designated area of the traffic scene as a minimal or non-compression segment;
storing said uncompressed picture data including the designated traffic scene and compression information for each said designated area in the data storing memory of the traffic monitoring arrangement;
selectively compressing said compression and non-compression data segments to a different degree of compression in such a manner that some of said segments are not being compressed, some of said segments are being slightly compressed, and some of said segments are being heavily compressed; and
selecting said at least one compression data segment using said location information of the traffic scene and decompressing only said at least one compression data segment representing said one designated area of the traffic scene, while discriminating against said at least one minimal or non-compression data segment representing said other designated area of the traffic scene.
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Accused Products
Abstract
The invention relates to a device for data storing with a compression coding and/or decoding device for the storing of picture data in a compressed or decompressed data format in a data memory. The compression coding and decoding device is adapted to mark or label and subsequently specific retrieve picture segments. This permits individual compression or decompression of labelled picture segments. In a method of storing picture data in a compressed or decompressed data format in a data storing memory, the picture data are divided into data segments. The location information of the data segments is stored. The method and device is preferably used in traffic monitoring installations. The picture data are camera data of a digital camera taking pictures of a traffic situation and a violating vehicle, when traffic regulations are violated such as by speeding. The device and method of the invention permits, for example, to decompress individually the picture segment showing the license plate of a violating vehicle.
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Citations
3 Claims
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1. A method of generating and storing picture data representing a traffic scene in a compressed and decompressed format in a data storing memory of a traffic monitoring arrangement having a digital camera, said method comprising the steps of:
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generating a picture of a traffic scene by means of said digital camera of the traffic monitoring arrangement, so as to generate uncompressed picture data representing said traffic scene; dividing said uncompressed picture data of the traffic scene into a plurality of data segments, so as to designate in said uncompressed picture data a location of at least one area of the traffic scene as a compression segment and a location of at least one other designated area of the traffic scene as a minimal or non-compression segment; storing said uncompressed picture data including the designated traffic scene and compression information for each said designated area in the data storing memory of the traffic monitoring arrangement; selectively compressing said compression and non-compression data segments to a different degree of compression in such a manner that some of said segments are not being compressed, some of said segments are being slightly compressed, and some of said segments are being heavily compressed; and selecting said at least one compression data segment using said location information of the traffic scene and decompressing only said at least one compression data segment representing said one designated area of the traffic scene, while discriminating against said at least one minimal or non-compression data segment representing said other designated area of the traffic scene. - View Dependent Claims (2, 3)
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Specification