Abstract: A method and apparatus for video telephony in a mobile terminal includes: extracting, after establishment of a video call, a facial feature from a video image captured by a camera unit of the mobile terminal, comparing the extracted facial feature with that of a pre-stored reference image, and correcting the video image according to the facial feature of the reference image. The corrected video image is transmitted to a counterpart of the video call.

Abstract: An apparatus and method of determining a convergence angle of a stereo camera. The method includes setting interest regions by first and second cameras, respectively, the interest regions having a same size and being symmetric to each other; photographing images by the first and second cameras while varying a convergence angle of the stereo camera by a predetermined degree for each photographed image of the first and second cameras, respectively; analyzing image histograms of the interest regions for each of the first and second cameras; and setting an optimum convergence angle.

Abstract: An apparatus and a method for creating a lens shading compensation table suitable for a photography environment are provided. A photography environment condition determining unit determines photography environment conditions of an image input from a camera module. A compensation parameter detecting unit detects compensation parameters corresponding to the determined photography environment conditions. A compensation table creating unit creates a lens shading compensation table suitable for the determined photography environment conditions by applying the detected compensation parameters to a predetermined reference lens shading compensation table.

Abstract: Disclosed is an apparatus and method for auto-focusing a camera, which includes the steps of detecting an initial value of an encoder by measuring an initial position of a lens system, matching the measured initial value of the encoder with the initial position value of the lens system to be moved, measuring a distance value of a subject through a distance measuring sensor, determining a displacement that a focus lens has to be moved with respect to the measured distance value, and adjusting a position of the focus lens such that a position value of the focus lens actually moved is the same as the displacement value.

Abstract: Disclosed is an apparatus and a method for enhancing an image in a portable terminal. The apparatus includes an image processor for performing an Image Signal Processing (ISP) for an image received in a preview mode, an ROI processor for extracting an ROI from the image received from the image processor, enhancing an image of the extracted ROI, and synthesizing the image of the enhanced ROI with the image received from the image processor, and a controller for controlling the ROI processor to extract an ROI from an image received from the image processor, enhancing an image of the extracted ROI when a photographing is selected, synthesizing an image of the enhanced ROI with the image received from the image processor, and outputting an synthesized image.

Abstract: An apparatus and method for compensating for back light of an image are provided. The method includes receiving an image at a preset time interval, upon receiving the image, dividing pixels constituting the received image according to preset ranges, determining whether the received image is a back light image by confirming a distribution degree of pixels of each of the divided ranges, adjusting the brightness of the back light image when the received image is the back light image, and storing the received image and the back light compensated image.

Abstract: A method and apparatus for video telephony in a mobile terminal includes: extracting, after establishment of a video call, a facial feature from a video image captured by a camera unit of the mobile terminal, comparing the extracted facial feature with that of a pre-stored reference image, and correcting the video image according to the facial feature of the reference image. The corrected video image is transmitted to a counterpart of the video call.

Abstract: Disclosed is an apparatus and method for auto-focusing a camera, which includes the steps of detecting an initial value of an encoder by measuring an initial position of a lens system, matching the measured initial value of the encoder with the initial position value of the lens system to be moved, measuring a distance value of a subject through a distance measuring sensor, determining a displacement that a focus lens has to be moved with respect to the measured distance value, and adjusting a position of the focus lens such that a position value of the focus lens actually moved is the same as the displacement value.