| 摘要 |
In a method for identifying individual objects in a digital image (I), a device is used that comprises a thresholding unit (20) and a threshold calculation unit (21). The threshold calculation unit (21) is designed to divide a reference image which corresponds to the digital image (I) into a plurality of subareas, to calculate at least one threshold value (Ti) for each subarea on the basis of the contrast in the associated subarea and to create a threshold matrix (T) from these threshold values (Ti). The thresholding unit (20) is designed to receive the digital image (I) and to compare the luminance values of the digital image with the threshold values (Ti) of the threshold matrix (T), in order to create a binary image on the basis of the comparison. The device and the method permit quick and memory-efficient identification of the individual objects, even if the digital image (I) contains variations in luminance and/or sharpness. A computer program product, a hardware circuit and a hand-held apparatus for position determination are also described.
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