Image signal processing

A method of optimising a simulator, which is to be used to process test image data to generate simulated sensor image data, the method comprising:

• receiving test image data consistent with a scene;
• processing the test image data according to one or more simulator settings to produce simulated sensor image data, wherein the simulator simulates a physical capture process of a scene by a sensor;
• capturing the scene using the sensor to produce sensor image data;
• performing a comparison between the simulated sensor image data and sensor image data;
• producing quality metric data associated with the comparison;
• and
• optimising one or more simulator settings based on the quality metric data.

An image processing system comprising:

• memory circuitry arranged to store test image data, one or more settings associated with an ISP and output image data;
• and
• processing circuitry configured to:
• receive test image data;
• process the test image data using a simulator to generate simulated sensor image data, wherein the simulator simulates a physical capture process of a scene by a sensor;
• process the simulated sensor image data according to one or more ISP settings to produce output image data;
• produce a quality metric associated with the output image data by performing a comparison between the output image data and the test image data;
• and
• optimise one or more settings associated with the ISP based on the quality metric.

An image processing system comprising:

• memory circuitry arranged to store test image data, one or more settings associated with a simulator, simulated sensor image data and sensor image data;
• and
• processing circuitry configured to:
• receive test image data consistent with a scene;
• process the test image data according to one or more simulator settings to produce simulated sensor image data, wherein the simulator simulates a physical capture process of a scene by a sensor;
• capture the scene using the sensor to produce sensor image data;
• perform a comparison between the simulated sensor image data and sensor image data;
• produce quality metric data associated with the comparison;
• and
• optimise one or more simulator settings based on the quality metric data.

A non-transitory computer readable storage medium comprising instructions which, when executed by a computer, cause the computer to:

• receive test image data,
• process the test image data using a simulator to generate simulated sensor image data, wherein the simulator simulates a physical capture process of a scene by a sensor;
• process the simulated sensor image data according to one or more ISP settings to produce output image data;
• produce quality metric data associated with the output image data by performing a comparison between the output image data and the test image data;
• and
• optimise the one or more ISP settings based on the quality metric data.

A non-transitory computer readable storage medium comprising instructions which, when executed by a computer, cause the computer to:

• receive test image data consistent with a scene;
• process the test image data according to one or more simulator settings to produce simulated sensor image data, wherein the simulator simulates a physical capture process of a scene by a sensor;
• capture the scene using the sensor to produce sensor image data;
• perform a comparison between the simulated sensor image data and sensor image data;
• produce quality metric data associated with the comparison;
• and
• optimise one or more simulator settings based on the quality metric data.