MOBILE APPARATUS AND METHOD FOR CONTROLLING THE SAME

• Main Authors: HWANG, HYO SEOK, ROH, KYUNG SHIK, HONG, SANG IL, AHN, SUNG HWAN, YOON, SUK JUNE, HYUNG, SEUNG YONG
• Format: Patent
• Language: English; Korean
• Published: 16.04.2013
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; TRANSMISSION

PURPOSE: A mobile device and a control method are provided to extract a feature point by predicting change of a scale corresponding to location change and blur generation for obtaining an image and to control object recognition or location recognition through matching the feature point. CONSTITUTION: A mobile device obtains a first original image and a second original image(201,204). The mobile device extracts a first feature point of the first original image and a second feature point of the second original image(202,205). The mobile device generates a first blurring image and a second blurring image(207). The mobile device calculates similarity between the first and second original images and the first and second blurring images. The mobile device determines scale change of the second original image based on the similarity. The mobile device controls at least one of object recognition and location recognition through the matching of the first feature point and the second feature point. [Reference numerals] (201) Obtaining a first original image; (202) Extracting a first feature point; (203) Generating a first descriptor of a first image patch; (204) Obtaining a second original image; (205) Extracting a second feature point; (206) Generating a second descriptor of a second image patch in multiscales; (207) Generating first and second blurring images; (208) Obtaining and sampling lines; (211) Determining as a normal searching range; (213) Determining as a scale-up searching range; (214) Determining as a scale-down searching range; (215) Matching the second feature point and first feature point of the second image patch in the determined scale searching range; (216) Recognition; (AA,BB) Start;