Fingerprint scanner auto-capture system and method

The system and method of carrying out the capture of the permissible fingerprint image are indicated in this invention specification. This method includes the process of carrying out the capture of the early fingerprint image in the image integration time of a title. Once the capture of this early fingerprint image is carried out, the capture of the 1st middle time will be carried out. Next, a picture darkness test is performed following a picture resolution test. When these one or more tests show that the 1st middle fingerprint image cannot be permitted, the capture of the next middle image integration time is carried out. Before performing a picture resolution test, the capture of this following middle fingerprint image is carried out. The capture of the further middle fingerprint image may be carried out until the capture of the picture which has a permissible darkness level and permissible resolution level is carried out. Furthermore, the fingerprint scanner which performs this method is indicated. [Selection figure] Fig. 3