Method and apparatus for measuring captured object using brightness information and magnified image of captured image

1. A method of measuring an object in a captured image, the method comprising:

receiving a captured image from a photographing apparatus;

selecting a predetermined region on the received image based on a user input;

magnifying an image with respect to the selected predetermined region;

obtaining brightness information of the received image;

displaying at least one of the magnified image and the obtained brightness information; and

selecting the object on the magnified image based on the obtained brightness information,

wherein the brightness information includes brightness histograms representing a brightness distribution according to a plurality of axes on the captured image, and

wherein in the displaying of the at least one of the magnified image and the obtained brightness information, as a cursor on the magnified image moves, brightness histograms with respect to a plurality of axes including the cursor are displayed.

2. The method of claim 1 , wherein the plurality of axes on the captured image are perpendicular to one another.

3. The method of claim 1 , wherein in the selecting of the object at least one point whose variation of the obtained brightness information on the magnified image is equal to or greater than a preset value is selected.

4. A non-transitory computer readable recording medium having embodied thereon a program for executing the method of claim 1 .

5. The method of claim 1 , further comprising:

obtaining pixel information of the received image; and

measuring the selected objected based on the pixel information.

6. The method of claim 5 , wherein in the obtaining pixel information of the received image, each pixel size is obtained based on scale marks included on the received image and the number of pixels included in the selected predetermined region of the received image.

7. The method of claim 6 , wherein the measuring of the selected object comprises measuring the selected object based on the obtained pixel size.

8. An apparatus for measuring an object in a captured image, the apparatus comprising:

an image receiving unit for receiving an image that is captured using a photographing apparatus;

an image selecting unit for selecting a predetermined region from the received image based on a user input;

an image magnifying unit for magnifying an image with respect to the selected predetermined region;

a brightness information obtaining unit for obtaining brightness information with respect to the received image;

a display unit for displaying at least one of the magnified image and the obtained brightness information;

an object selecting unit for selecting an object on the magnified image based on the obtained brightness information,

wherein the brightness information comprises brightness histograms representing a brightness distribution according to a plurality of axes on the captured image, and

wherein as a cursor on the magnified image moves, the display unit displays brightness histograms with respect to the plurality of axes including the cursor.

9. The apparatus of claim 8 , wherein the plurality of axes on the captured image are perpendicular to one another.

10. The apparatus of claim 8 , wherein the object selecting unit selects at least one point where a variation rate of the obtained brightness information is equal to or greater than a preset value.

11. The apparatus of claim 8 , further comprising:

a pixel information obtaining unit for obtaining pixel information with respect to the received image; and

a measuring unit for measuring an object selected based on the pixel information.

12. The apparatus of claim 11 , wherein the pixel information obtaining unit obtains each pixel size based on scale marks included in the received image and the number of pixels included in the selected predetermined region of the received image.

13. The apparatus of claim 12 , wherein the measuring unit measures the selected object based on each obtained pixel size.