Zoom method of a digital camera based on extracted values
First Claim
Patent Images
1. A zoom method comprising:
- searching a center search line of a photographic screen, wherein the center search line comprises a horizontal axis at an approximate center of the photographic screen;
searching each of a plurality of upper search lines from the center search line;
searching each of a plurality of lower search lines from the center search line;
extracting a color average value and a deviation of a photographic object within the photographic screen for each of the plurality of upper search lines and the plurality of lower search lines;
determining a size of photographic object based on the extracted color average value and the extracted deviation for each of the plurality of upper search lines and the plurality of lower search lines, wherein determining the size of the photographic object includes determining a number of pixels that exist within a range of a certain deviation from an average value of a specific color and determining an area of the photographic object based on the determined number of pixels; and
setting a zoom ratio by comparing the determined size of the photographic object with a reference value or with a preset size.
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Abstract
A zoom method of a small digital camera is provided that includes searching a center search line of a photographic screen according to a set photographic mode and searching upper and lower lines based on the center search line so as to extract a color average value and a deviation of a photographic object. A size of a photographic object may be calculated based on the average value and the deviation. A zoom ratio may be set according to a size of the photographic object. A portrait mode and a text mode may be implemented by software without influencing a size of a mobile communication terminal and so as to fast process the zoom function.
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Citations
25 Claims
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1. A zoom method comprising:
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searching a center search line of a photographic screen, wherein the center search line comprises a horizontal axis at an approximate center of the photographic screen; searching each of a plurality of upper search lines from the center search line; searching each of a plurality of lower search lines from the center search line; extracting a color average value and a deviation of a photographic object within the photographic screen for each of the plurality of upper search lines and the plurality of lower search lines; determining a size of photographic object based on the extracted color average value and the extracted deviation for each of the plurality of upper search lines and the plurality of lower search lines, wherein determining the size of the photographic object includes determining a number of pixels that exist within a range of a certain deviation from an average value of a specific color and determining an area of the photographic object based on the determined number of pixels; and setting a zoom ratio by comparing the determined size of the photographic object with a reference value or with a preset size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A zoom method comprising:
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searching a plurality of lines of a photographic screen by alternatively searching lines with a pre-determined gap up or down one line by one line; for each of the plurality of lines, extracting a color average value and a deviation of a photographic object on the photographic screen; determining a size of a photographic object based on the extracted color average value and the extracted deviation for each of the plurality of lines, wherein determining the size of the photographic object includes determining a number of pixels that exist within a range of a certain deviation from an average value of a particular color and determining an area of the photographic object based on the determined number of pixels; determining a zoom ratio by comparing the determined size of the photographic object and a reference value; and applying the determined zoom ratio to the photographic object. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A zoom method of a digital camera apparatus associated with a mobile communication terminal, the method comprising:
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searching a center search line of a photographic screen to detect a photographic object, wherein the center search line is approximately at a center of the photographic screen; searching a plurality of upper search lines of the center search line to extract an average value and a deviation of a skin color of the photographic object for each of the upper search lines; searching a plurality of lower search lines of the center search line to extract an average value and a deviation of a skin color of the photographic object for each of the lower search lines; determining a size of a face region based on the extracted average value and the extracted deviation of the skin color for each of the plurality of upper search lines and based on the extracted average value and the extracted deviation of the skin color for each of the plurality of lower search lines, wherein determining the size of the face region includes determining a number of pixels that exist within a range of a certain deviation from an average value of a skin color and determining an area of the face region based on the determined number of pixels; comparing the determined size of the face region with a reference value; calculating a zoom ratio based on the comparing; and applying the calculated zoom ratio to the photographic screen. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification