Image enhancement framework
AssigneeVisteon Global Technologies, Inc.
InventorPaul Fredrick Luther Weindorf
Life of this patent
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Abstract
An image enhancement system includes an ambient light sensor, a circuit and a processor. The ambient light sensor is operational to measure an ambient light level. The circuit is operational to: generate a histogram based on an input video signal; export the histogram; receive a gray shade look up table; and generate an output video signal by converting a plurality of gray shades in the input video signal based on the gray shade look up table. The processor is operational to: receive the histogram from the circuit; develop the gray shade look up table based on the histogram and the ambient light level; and transfer the gray shade look up table to the circuit.
Claims20
An image enhancement system comprising:
- an ambient light sensor operational to measure an ambient light level;
- a circuit operational to:
- generate a histogram based on an input video signal;
- export the histogram;
- receive a gray shade look up table;
- and
- generate an output video signal by converting a plurality of gray shades in the input video signal based on the gray shade look up table;
- and
- a processor operational to:
- receive the histogram from the circuit;
- develop the gray shade look up table based on the histogram and the ambient light level;
- and
- transfer the gray shade look up table to the circuit.
A method for image enhancement comprising:
- measuring an ambient light level with an ambient light sensor;
- generating a histogram with a circuit based on an input video signal;
- exporting the histogram from the circuit to a processor;
- receive the histogram at the processor from the circuit;
- developing a gray shade look up table with the processor based on the histogram and the ambient light level;
- transferring the gray shade look up table from the processor to the circuit;
- receiving the gray shade look up table at the circuit from the processor;
- generating an output video signal with the circuit by converting a plurality of gray shades in the input video signal based on the gray shade look up table;
- and
- generating a visible image based on the video output signal.
A vehicle comprising:
- an ambient light sensor operational to measure an ambient light level;
- a control unit coupled to the ambient light sensor and operational to:
- generate an input video signal;
- generate a histogram based on the input video signal;
- develop a gray shade look up table based on the histogram and the ambient light level;
- and
- generate an output video signal by converting a plurality of gray shades in the input video signal based on the gray shade look up table;
- and
- a display panel coupled to the control unit and operational to generate a visible image based on the video output signal.
Dependencies are inferred from the claim text.