Image processing method and apparatus for generating and displaying screen nail images
View Patent ↗An exemplary image processing method and apparatus, and an exemplary digital photographing apparatus, may develop and display a screen nail image and a face screen nail image rather than a full resolution image. The screen nail image may be generated using RAW data output from an image sensor, a predetermined face region of the screen nail image may be detected, and the face screen nail image may be generated from the screen nail image using coordinates of the detected face region. Thus, power consumption and processing time delay caused by processing all parts of a full resolution image may be minimized, and a quality of the full resolution image may be conveniently checked. As a result, a user may conveniently select and store an image in high-speed still picture photographing.
1. An image processing method comprising:
generating a screen nail image using RAW data output from an image sensor of a digital photographing apparatus before recording a raw image corresponding to the RAW data;
detecting a predetermined face region of the screen nail image;
generating a face screen nail image from the screen nail image using coordinates of the detected face region; and
recording the raw image from the RAW data in a predetermined recording medium of the digital photographing apparatus in response to a selection signal for the screen nail image or the face screen nail image.
2. The image processing method of claim 1 , wherein the image sensor includes a high-speed CMOS (Complementary Metal Oxide Semiconductor) image sensor.
3. The image processing method of claim 1 , further comprising displaying the face screen nail image.
4. The image processing method of claim 3 , further comprising, when a user selects the displayed face screen nail image, displaying the screen nail image corresponding to the face screen nail image.
5. The image processing method of claim 4 , further comprising, when the user selects one of the displayed face screen nail image and screen nail image, recording a raw image corresponding to the selected one of the displayed face screen nail image and screen nail image in the predetermined recording medium of the digital photographing apparatus.
6. The image processing method of claim 1 , further comprising displaying the screen nail image and the face screen nail image together.
7. The image processing method of claim 1 , further comprising storing the RAW data output from the image sensor in a memory.
8. The image processing method of claim 1 , further comprising, when a size of the detected face region varies, re-sizing the size of the face region to correspond to that of the face region of the face screen nail image.
9. An image processing method comprising:
setting a ROI (Region Of Interest) of a predetermined subject prior to photographing the subject;
photographing the subject;
generating a screen nail image using RAW data output from a high-speed CMOS (Complementary Metal Oxide Semiconductor) image sensor before recording a raw image from the RAW data in a predetermined recording medium;
generating a ROI screen nail image from the screen nail image using coordinates of the set ROI; and
displaying the ROI screen nail image.
10. The image processing method of claim 9 , wherein when a user selects the displayed ROI screen nail image, displaying the ROI screen nail image further comprises displaying the screen nail image corresponding to the ROI screen nail image.
11. The image processing method of claim 9 , wherein the ROI is selected by a user using a preview screen.
12. A non-transitory computer-readable storage medium having stored thereon a computer program executable by a processor for performing an image processing method comprising:
generating a screen nail image using RAW data output from an image sensor of a digital photographing apparatus before recording a raw image corresponding to the RAW data;
detecting a predetermined face region of the screen nail image;
generating a face screen nail image from the screen nail image using coordinates of the detected face region; and
recording the raw image from the RAW data in a predetermined recording medium of the digital photographing apparatus in response to a selection signal for the screen nail image or the face screen nail image.
13. An image processing apparatus comprising:
a screen nail generator which generates a screen nail image using RAW data output from an image sensor before recording a raw image from the RAW data in a predetermined recording medium;
a ROI (Region Of Interest) detector which detects a ROI selected by a user using a preview screen prior to photographing; and
a ROI screen nail generator which generates a ROI screen nail image from the screen nail image using coordinates of the detected ROI.
14. The image processing apparatus of claim 13 , wherein the image sensor includes a high-speed CMOS (Complementary Metal Oxide Semiconductor) image sensor.
15. The image processing apparatus of claim 14 , further comprising a display which selectively displays one of the screen nail image and the ROI screen nail image.
16. The image processing apparatus of claim 14 , further comprising:
a face detector which detects a predetermined face region of the screen nail image; and
a face screen nail generator which generates a face screen nail image from the screen nail image using coordinates of the detected face region.
17. The image processing apparatus of claim 16 , further comprising a display which selectively displays the screen nail image and the face screen nail image.
18. A digital photographing apparatus comprising:
a memory which temporarily stores RAW data output from a high-speed CMOS (Complementary Metal Oxide Semiconductor) image sensor;
a screen nail generator which generates a screen nail image using the stored RAW data before recording the raw image from the RAW data in the predetermined recording medium;
a ROI (Region Of Interest) detector which detects a ROI selected by a user using a preview screen prior to photographing;
a ROI screen nail generator which generates a ROI screen nail image from the screen nail image using coordinates of the detected ROI;
an image signal processing unit which develops the screen nail image and the ROI screen nail image; and
a display which selectively displays the developed screen nail image and the ROI screen nail image.
19. The digital photographing apparatus of claim 18 , further comprising:
a face detector which detects a predetermined face region of the screen nail image; and
a face screen nail generator which generates a face screen nail image from the screen nail image using coordinates of the detected face region.
20. The digital photographing apparatus of claim 19 , wherein the display selectively displays the screen nail image and the face screen nail image.