Patent ID: 11959807
Assignee: MELEXIS TECHNOLOGIES NV
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The apparatus according to claim 1, wherein
the background identifier further comprises a pixel threshold calculator;
the largest number of substantially the same pixel intensity values has a range of measured pixel intensities associated therewith;
the expected background intensity calculator is configured to calculate a gradient across the range of measured pixel intensities, the model comprising the calculated gradient;
the expected background intensity calculator is configured to use the calculated gradient in order to generate a plurality of expected pixel background intensity values in respect of the array of thermal sensing pixels;
the pixel threshold calculator is configured to compare the plurality of expected pixel intensity values with the pixel measurement data in order to determine a temperature threshold value; and
the pixel classifier is configured to classify the intensity measurement by the pixel of the array of thermal sensing pixels as corresponding to the background or the object by comparing the intensity measurement with the temperature threshold value.