Patent application number | Description | Published |
20100073520 | IMAGE BRIGHTNESS COMPENSATION METHOD AND DIGITAL CAMERA DEVICE WITH IMAGE BRIGHTNESS COMPENSATION FUNCTION - An image brightness compensation method and a digital camera device with an image brightness compensation function are suitable for adjusting a brightness of a digital image shot by a digital camera device, especially when the shot object is located outside a maximum output range of a flash lamp. The method includes the steps of pre-capturing a target image, and recording target information; triggering a flash lamp, and meanwhile capturing a raw image; determining whether the raw image satisfies a brightness threshold or not according to a brightness difference between the target information and the raw image; if the raw image fails to satisfy the brightness threshold, executing a brightness compensation program on the raw image according to the target information; and finally, generating an output image. | 03-25-2010 |
20100073552 | IMAGE BRIGHTNESS CORRECTION METHOD - An image brightness correction method is described. First, a pre-flash is fired and a pre-flash image is shot. After a main flash duration is estimated according to the pre-flash image and an automatic exposure time of a camera device, a main flash is fired and a raw image is shot. Then, a brightness gain of the raw image is compensated according to a preset gain threshold, and a digital brightness gain of the image is adjusted to enable the image shot each time to achieve the same brightness gain. | 03-25-2010 |
20100165178 | ADJUSTING METHOD OF FLASH INTENSITY - An adjusting method of flash intensity is applied in an image capture apparatus with a flash lamp, where two pre-flash images corresponding the object are retrieved under two different pre-flash lights, respectively, and then a flash intensity of main-flash light is calculated according to one of the retrieved pre-flash images, so as to retrieve a main-flash image corresponding the object under the main-flash light with the calculated main-flash light. | 07-01-2010 |
20110043682 | METHOD FOR USING FLASH TO ASSIST IN FOCAL LENGTH DETECTION - A method for assist in focal length detection is adapted to a digital camera having a flash. The method includes the following steps. First, the flash of the digital camera is actuated and an image having a face portion is captured. Afterwards, an exposure feature value of the face portion in the image is calculated. A focus range comparison table is looked up according to the exposure feature value to obtain an initial focus position. Then, a focus procedure is performed according to the initial focus position to obtain a target focal length. After the target focal length is obtained, a flash feature value of the image is further calculated, and a guide number (GN) and a diaphragm value are set according to the flash feature value. | 02-24-2011 |
20110050661 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display (LCD) device is capable of automatically adjusting a color display parameter according to external light. The LCD device includes an LCD panel, a backlight module, a photosensitive module, and a controller. The LCD panel has a display region and a light-incident region. The backlight module is disposed below the LCD panel and corresponding to the display region. The photosensitive module is disposed below the LCD panel and corresponding to the light-incident region, for receiving an optical signal passing through the LCD panel and converting the optical signal into an electrical signal. The controller is electrically connected to the LCD panel and the photosensitive module, for automatically adjusting a color display parameter of the LCD panel according to the electrical signal. | 03-03-2011 |
20110058095 | METHOD FOR USING FLASH TO ASSIST IN FOCAL LENGTH DETECTION - A method for assisting in focal length detection is applicable to a digital camera having the flash. The method includes the following steps. First, the flash of the digital camera is actuated and a first image is captured. Afterwards, a characteristic exposure value of the first image is calculated. A focus range comparison table is looked up according to the characteristic exposure value to obtain an initial focus position. Then, a focus procedure is performed according to the initial focus position to obtain a target focal length. | 03-10-2011 |
20110058096 | FAST FOCUSING METHOD FOR DIGITAL CAMERA - A fast focusing method for a digital camera is applied in an auto focusing stage for judging whether the digital camera needs to be refocused. The fast focusing method includes recording a system time after a previous focusing (defined as a first time); capturing a system time before a current focusing (defined as a second time); performing a fuzziness detection procedure to acquire a focus value when a difference obtained by subtracting the first time from the second time is greater than a focusing time threshold; setting a focusing focal length range covering a reference focal length when the focus value is between a lower limit focusing threshold and an upper limit focusing threshold; capturing images at different focusing focal lengths respectively in the focusing focal length range; calculating a contrast value of each image; calculating a target focal length from the contrast values through a quadratic curve approximation method. | 03-10-2011 |
20110063494 | CONTINUOUS FOCUSING METHOD FOR DIGITAL CAMERA - A continuous focusing method for a digital camera is described, which is applicable to determine whether the digital camera performs a focusing procedure or not when the digital camera switches from a first scene to a second scene in a live view stage. The continuous focusing method includes the following steps. A preview image of a second scene is obtained. A blur detection procedure is performed on the preview image, so as to acquire a corresponding focus value. It is determined whether the focus value exceeds a focusing threshold value or not; if not, a focusing procedure is performed; otherwise, if the focus value is greater than the focusing threshold value, the digital camera still maintains a current focusing focal length, which represents that a focusing focal length of the second scene is the same as that of the first scene. | 03-17-2011 |
20110069190 | FAST FOCUSING METHOD FOR DIGITAL CAMERA - A fast focusing method for a digital camera is applied in the digital camera to judge whether a focusing focal length of the digital camera needs to be adjusted in an auto focusing stage. The fast focusing method includes capturing a target image at a reference focal length; performing a blur detection procedure on the target image to acquire a focus value; setting a focusing focal length range covering the reference focal length when the focus value is between a lower limit focusing threshold and an upper limit focusing threshold; capturing corresponding comparison images at different focusing focal lengths respectively in the focusing focal length range; calculating a contrast value of each comparison image; and calculating the contrast values and a target focal length through a quadratic curve approximation method, and adjusting lenses of the digital camera to the set target focal length to perform shooting. | 03-24-2011 |
20120002081 | METHOD FOR ADJUSTING PHOTOSENSITIVENESS OF DIGITAL CAMERA - A method for adjusting photosensitiveness is able to determine a relative distance of an object in an image capture area through images captured before and after pre-flash of a flash lamp, so that the relative distance serves as a reference for adjusting current photosensitiveness of the digital camera, thereby capturing an image having better quality in a status that the flash lamp provides a fill light. | 01-05-2012 |
20120044389 | METHOD FOR GENERATING SUPER RESOLUTION IMAGE - A method generates a super resolution (SR) image by the steps of receiving a plurality of images corresponding to the same shot target; selecting one of the images as a basic image, and using the images except the basic image as a plurality of reference images; processing the reference images by using a geometric coordinate correction procedure according to the basic image, so as to generate a plurality of corrected images respectively corresponding to the reference images; and performing a resolution enhancement procedure on the basic image and the corrected images, so as to generate the SR image. | 02-23-2012 |
20120092534 | IMAGE PROCESSING METHOD - An image processing method, applicable to a digital image device, includes the following steps. At least one original image of different brightness ranges is captured, and more images of different brightness ranges are generated from the original image by using an image post-processing technique. Based on characteristics of the image of each brightness range, the weights of the image of each brightness range are defined. Then, hierarchical fusion is performed on the images of the different brightness ranges according to weight relations, so as to form a high-dynamic-range image capable of presenting features of each brightness range. | 04-19-2012 |