Selective color display of a thermal image
AssigneeSeek Thermal, Inc.
InventorBlake Henry
Life of this patent
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Abstract
An imaging system includes an array of photodetectors that produce an array of intensity values. Image and display processing components of the imaging system produce an array of display-formatted pixels for display on an imaging system display. The display-formatted pixels include a first plurality of pixels associated with a color lookup table and a second plurality of pixels associated with a grey-scale lookup table. The image and display processing components compare pixel intensity values to temperature criteria and apply the color lookup table to pixels satisfying the temperature criteria and apply the grey-scale lookup table to pixels not satisfying the temperature criteria.
Claims20
A method for displaying a thermal image using a thermal imaging system comprising an array of photodetectors configured to acquire thermal image data, the method comprising:
- acquiring thermal image data with the array of photodetectors, the thermal image data comprising an array of pixel intensity values;
- receiving temperature criteria;
- determining a scene temperature for individual pixel intensity values using a thermography function;
- comparing individual pixels to the temperature criteria;
- formatting for display individual pixel values;
- applying a first lookup table to an individual display-formatted pixel if the pixel value satisfies the temperature criteria and applying a second lookup table to the individual display-formatted pixel if the pixel value does not satisfy the temperature criteria;
- and
- displaying a thermal image on a display of the thermal imaging system, the thermal image comprising the display-formatted individual pixel values with the applied lookup tables.
A thermal imaging system comprising:
- an imaging array comprising an infrared focal plane array, the infrared focal plane array configured to generate signals corresponding to levels of infrared light incident on the infrared focal plane array;
- a detector circuit comprising readout electronics that receive the generated signals and output an array of pixel intensity values;
- a system controller configured to:
- receive temperature criteria;
- determine a scene temperature for individual pixel intensity values using a thermography function;
- compare individual pixels to the temperature criteria;
- format for display individual pixel intensity values;
- and
- apply a first lookup table to an individual display-formatted pixel if the individual pixel intensity value satisfies the intensity-based criteria and apply a second lookup table to the individual display-formatted pixel if the individual pixel intensity value does not satisfy the intensity-based criteria;
- and
- a display configured to display a thermal image comprising an array of the display-formatted pixels with the applied lookup tables.
Dependencies are inferred from the claim text.