Method and apparatus for recognizing iris

1. An apparatus for performing iris recognition, comprising:

a camera module configured to photograph an iris image; and

a processor configured to, in response to photographing the iris image:

obtain an iris area of the photographed iris image;

perform a first recognition process by comparing the iris area of the photographed iris image with a stored reference iris image, wherein:

if the iris area of the photographed iris image matches the reference iris image, the processor is configured to output a recognition success message, and

otherwise, if the first recognition process fails, the processor is configured to obtain a part of the iris area for which the first recognition process has failed in response to comparing each part of a plurality of parts the iris area with the stored reference iris image,

perform a second recognition process by comparing the obtained part of the iris area with the reference iris image, and

determine whether the iris recognition is successful based on the first recognition process and the second recognition process,

wherein the obtained part of the iris area consists of remaining parts of the iris area other than a part of the iris area which matches the reference iris image in the first recognition process.

2. The apparatus of claim 1 , wherein the processor is further configured to,

determine a similarity by comparing the iris area of the photographed iris image and the stored reference iris image, and

obtain the part of the iris area based on the determined similarity.

3. The apparatus of claim 1 , wherein, if the first recognition process fails, the processor is further configured to control the camera module to re-photograph the iris image, and

obtain a part of the re-photographed iris image corresponding to the part of the iris area for which the first recognition process has failed as the obtained part of the iris area.

4. The apparatus of claim 3 , wherein, if the first recognition process fails, the processor is further configured to output a guide information for controlling a photographing environment.

5. The apparatus of claim 1 , wherein the reference iris image compared with the obtained part of the iris area comprises a part of the reference iris image corresponding to the obtained part of the iris area.

6. The apparatus of claim 1 , wherein the processor is further configured to:

obtain the part of the iris area for which the first recognition process has failed from the photographed iris image,

change at least one of a color, saturation, and brightness of at least the obtained part of the iris area, and

perform the second recognition process by comparing the changed part of the iris area with the reference iris image.

7. An operation method of an electronic device for performing iris recognition, the operation method comprising:

obtaining a photographed iris image;

obtaining an iris area of the photographed iris image;

performing a first recognition process by comparing the iris area of the photographed iris image with a stored reference iris image, wherein:

if the iris area of the photographed iris image matches the reference iris image, the method further comprises outputting a recognition success message, and

otherwise, if the first recognition process fails, the method further comprises obtaining a part of the iris area for which the first recognition process has failed in response to comparing each part of a plurality of parts of the iris area with the stored reference iris image,

performing a second recognition process by comparing the obtained part of the iris area with the reference iris image, and

determining whether the iris recognition is successful based on the first recognition process and the second recognition process,

wherein the obtained part of the iris area consists of remaining parts of the iris area other than a part of the iris area which matches the reference iris image in the first recognition process.

8. The operation method of claim 7 , wherein the obtaining the part of the iris area comprises determining a similarity by comparing the iris area of the photographed iris image and the stored reference iris image, and obtaining the part of the iris area based on the determined similarity.

9. The operation method of claim 7 , wherein the obtaining the part of the iris area comprises obtaining a re-photographed iris image, and obtaining a part of the re-photographed iris image corresponding to the part of the iris area for which the first recognition process has failed as the obtained part of the iris area.

10. The operation method of claim 9 , wherein the obtaining the re-photographed iris image comprises outputting a guide information for controlling a photographing environment.

11. The operation method of claim 7 , wherein the reference iris image compared with the obtained part of the iris area comprises a part of the reference iris image corresponding to the obtained part of the iris area.

12. The operation method of claim 7 , wherein if the first recognition process fails, the method further comprises:

obtaining the part of the iris area for which the first recognition process has failed from the photographed iris image,

changing at least one of a color, saturation, and brightness of at least the obtained part of the iris area, and

performing the second recognition process by comparing the changed part of the iris area with the reference iris image.