Vehicle vision system with video compression
First Claim
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1. A multi-camera vision system of a vehicle, said multi-camera vision system comprising:
- at least four cameras disposed at a vehicle and having respective fields of view exterior of the vehicle;
wherein said at least four cameras comprises (i) at least one forward viewing camera having a field of view forward of the vehicle, (ii) at least one rearward viewing camera having a field of view rearward of the vehicle, (iii) at least one driver-side side viewing camera having a field of view sideward of the vehicle at the driver-side of the vehicle, and (iv) at least one passenger-side side viewing camera having a field of view sideward of the vehicle at the passenger-side of the vehicle;
wherein each of said cameras comprises a pixelated imaging array having a plurality of photosensing elements;
wherein each of said cameras is operable to capture image data within the respective field of view;
wherein captured image data is compressed at the respective camera and wherein the compressed image data is communicated to a control unit;
wherein said control unit comprises an image processor;
wherein said image processor processes image data frame by frame using an indirect context model and without time wise dependency;
wherein compressed image data is received at said control unit and decompressed before processing of image data by said image processor;
wherein captured image data is compressed via a lossy video data compression and compressed image data is decompressed at said control unit via a decompression codec based on vector quantization using said indirect context model to select from available vectors; and
wherein captured image data is compressed at a compression rate that depends on a selected vector length and color space.
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Abstract
A multi-camera vision system of a vehicle includes at least four cameras disposed at a vehicle and having respective fields of view exterior of the vehicle. Each of the cameras is operable to capture image data representative of the respective field of view. Captured image data is compressed at the respective camera and the compressed image data is communicated to a control unit. The control unit includes an image processor operable to process image data. The image processor processes image data frame by frame using an indirect context model and without time wise dependency.
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Citations
16 Claims
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1. A multi-camera vision system of a vehicle, said multi-camera vision system comprising:
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at least four cameras disposed at a vehicle and having respective fields of view exterior of the vehicle; wherein said at least four cameras comprises (i) at least one forward viewing camera having a field of view forward of the vehicle, (ii) at least one rearward viewing camera having a field of view rearward of the vehicle, (iii) at least one driver-side side viewing camera having a field of view sideward of the vehicle at the driver-side of the vehicle, and (iv) at least one passenger-side side viewing camera having a field of view sideward of the vehicle at the passenger-side of the vehicle; wherein each of said cameras comprises a pixelated imaging array having a plurality of photosensing elements; wherein each of said cameras is operable to capture image data within the respective field of view; wherein captured image data is compressed at the respective camera and wherein the compressed image data is communicated to a control unit; wherein said control unit comprises an image processor; wherein said image processor processes image data frame by frame using an indirect context model and without time wise dependency; wherein compressed image data is received at said control unit and decompressed before processing of image data by said image processor; wherein captured image data is compressed via a lossy video data compression and compressed image data is decompressed at said control unit via a decompression codec based on vector quantization using said indirect context model to select from available vectors; and wherein captured image data is compressed at a compression rate that depends on a selected vector length and color space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multi-camera vision system of a vehicle, said multi-camera vision system comprising:
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at least four cameras disposed at a vehicle and having respective fields of view exterior of the vehicle; wherein said at least four cameras comprises (i) at least one forward viewing camera having a field of view forward of the vehicle, (ii) at least one rearward viewing camera having a field of view rearward of the vehicle, (iii) at least one driver-side side viewing camera having a field of view sideward of the vehicle at the driver-side of the vehicle, and (iv) at least one passenger-side side viewing camera having a field of view sideward of the vehicle at the passenger-side of the vehicle; wherein each of said cameras comprises a pixelated imaging array having a plurality of photosensing elements; wherein each of said cameras is operable to capture image data within the respective field of view; wherein captured image data is compressed at the respective camera and wherein the compressed image data is communicated to a control unit; wherein compressed image data is communicated to said control unit via an Ethernet communication; wherein said control unit comprises an image processor; wherein compressed image data is received at said control unit and decompressed before processing of image data by said image processor; wherein said image processor processes image data frame by frame using an indirect context model and without time wise dependency; and wherein captured image data is compressed via a lossy video data compression and compressed image data is decompressed at said control unit via a decompression codec based on vector quantization using said indirect context model to select from available vectors. - View Dependent Claims (12, 13, 14)
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15. A multi-camera vision system of a vehicle, said multi-camera vision system comprising:
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at least four cameras disposed at a vehicle and having respective fields of view exterior of the vehicle; wherein said at least four cameras comprises (i) at least one forward viewing camera having a field of view forward of the vehicle, (ii) at least one rearward viewing camera having a field of view rearward of the vehicle, (iii) at least one driver-side side viewing camera having a field of view sideward of the vehicle at the driver-side of the vehicle, and (iv) at least one passenger-side side viewing camera having a field of view sideward of the vehicle at the passenger-side of the vehicle; wherein each of said cameras comprises a pixelated imaging array having a plurality of photosensing elements; wherein each of said cameras is operable to capture image data within the respective field of view; wherein captured image data is compressed at the respective camera and wherein the compressed image data is communicated to a control unit; wherein said control unit comprises an image processor; wherein compressed image data is received at said control unit and decompressed before processing of image data by said image processor; wherein said image processor processes image data frame by frame using an indirect context model and without time wise dependency; wherein a pixel or sequence of consecutive pixels are coded as a decision bit by deciding a vector duplet indexed by a context; and wherein captured image data is compressed via a lossy video data compression and compressed image data is decompressed at said control unit via a decompression codec based on vector quantization using said indirect context model to select from available vectors, and wherein captured image data is compressed at a compression rate that depends on a selected vector length and color space. - View Dependent Claims (16)
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Specification