How does reduction of the fingerprint area affect performance?
The size of a fingerprint generally determines the cost of a fingerprint sensor, the size of the reference trait’s saved data file, and last but not least, the processing time. Therefore it can be advantageous to process only part of the fingerprint. But how does this reduction affect performance? A rough estimation is possible, if one simply assumes that different areas of the fingerprint are statistically independent of each other with respect to the analyzed features. In this case, the same treatment as for multiple fingers applies, only that the number of fingers is replaced by a size factor. Also here, the two same extreme cases are treated, whereby the “conjunctions” AND or OR depend on the algorithms used and thus generally lie outside of the area of influence of the system integrator. In principle however, a reduction in the area of a fingerprint results in a reduction of overall performance. (This treatment does not apply for different prints from different fingers. Here, by a
The size of a fingerprint generally determines the cost of a fingerprint sensor, the size of the reference trait’s saved data file, and last but not least, the processing time. Therefore it can be advantageous to process only part of the fingerprint. But how does this reduction affect performance? A rough estimation is possible, if one simply assumes that different areas of the fingerprint are statistically independent of each other with respect to the analyzed features. In this case, the same treatment as for multiple fingers applies, only that the number of fingers is replaced by a size factor. Also here, the two same extreme cases are treated, whereby the “conjunctions” AND or OR depend on the algorithms used and thus generally lie outside of the area of influence of the system integrator. In principle however, a reduction in the area of a fingerprint results in a reduction of overall performance. (This treatment does not apply for different prints from different fingers.
