Image Capturing Device Capable of Simplifying Characteristic Value Sets of Captured Images and Control Method Thereof

An image capturing device capable of simplifying characteristic value sets of captured images, comprising:

• a characteristic conversion means, for converting a captured image into a characteristic image which includes a group of first characteristic value sets;
• a data storage means, for storing a lookup table which comprises second characteristic value sets;
• a characteristic simplification means, for executing a simplification process according to the lookup table, and deleting the first characteristic value set not existing in the lookup table from the group of first characteristic value sets, and replacing each deleted first characteristic value set by the second characteristic value set matching with a predetermined condition and existing in the lookup table, so as to generate a simplified group of characteristic value sets;
• a storage means, for storing a plurality of templates;
• and
• a recognition means, for comparing the simplified group of characteristic value sets with the plurality of templates to recognize a specific object in the captured image.

A control method capable of simplifying a characteristic value set of images, comprising the steps of:

• converting a captured image into a characteristic image by a characteristic conversion module, and the characteristic image including a group of first characteristic value sets;
• storing a lookup table by a data storage module, the lookup table comprising second characteristic value sets;
• executing a simplification process by a characteristic simplification module according to the lookup table, and deleting the first characteristic value set not existing in the lookup table from the group of first characteristic value sets, and replacing each deleted first characteristic value set by the second characteristic value set matching with a predetermined condition and existing in the lookup table, so as to generate a simplified group of characteristic value sets;
• storing a plurality of templates by a template storage module;
• and
• comparing the simplified group of characteristic value sets with the plurality of templates a recognition module to recognize a specific object in the captured image.