Patent application number | Description | Published |
20130335620 | FOCUS POSITION SEARCHING METHOD - A focus position searching method is used to determine an optimum position of a lens module, the lens module being driven by a voice coil motor (VCM), the VCM according to an input current to drive the lens module. The focus position searching method is used to search a left boundary and a right boundary, then two current values are obtained in a range between the left and the right boundaries, by using a golden section method to drive the lens module to capture an image and calculate sharpness of the image. According to the sharpness, the left and the right boundaries are continuously moved rightward and leftward, thereby two differences current values are obtained in the left and right boundaries within a certain range, and a searched current is used to carry out the focus. | 12-19-2013 |
20140071298 | BLEMISH DETECTION SYTEM AND METHOD - A blemish detecting system includes an image capturing module, a brightness calculating module, a blemish detection module, a storage module, and a processor. The image capturing module captures an image. The image has a number of pixels. The brightness calculating module calculates the brightness values of the pixels. The blemish detection module gives serial numbers to the pixels according to the locations of the pixels, scans the pixels according to a first sequence, and marks the pixel of which the brightness value is less than a predetermined brightness value as a blemish. The storage module stores the serial numbers of the scanned pixels, and thus the blemish detection module does not need to scan the pixels for a second time. The brightness calculating module and the blemish detection module are computerized instructions and are executed by the processor. | 03-13-2014 |
20140078340 | WHITE BALANCING METHOD AND IMAGE CAPTURING DEVICE - A white balancing method includes capturing an original image with red(R), green (G) and blue (B) color channels; computing and converting the R, G and B color channels into original color histogram; stretching the original color histograms over the entire grayscale width from 0 to 255 values; and adjusting a color of the original image based on the stretched color histograms to obtain a white balanced image. In the computing and converting the original color histograms, a sampling length follows a formula of span | 03-20-2014 |
20140104454 | METHOD FOR WHITE BALANCE ADJUSTMENT - A white balance adjustment method includes capturing a raw image by an image capturing device, setting an initial maximum and an initial minimum threshold values of each channels, and obtaining a reference white and a reference black. Color scale values of each R, G, and B channels are extracted and a minimum, a maximum, and an average values of the color scale values corresponding to each channels are obtained. A modulation factor of each channel is defined by using above defined three values, according to the modulation factor of each channels to re-define a new maximum threshold value as a reference white and a new minimum threshold value as a reference black. According to the obtained reference black and the reference white to complete the white balance adjustment of the image. | 04-17-2014 |
20140111665 | METHOD FOR WHITE BALANCE ADJUSTMENT OF IMAGES - A white balance adjustment method includes capturing a raw image by an image capturing device where an arrangement format of the raw image is BGb/GrR, a predetermined sampling width is used to sample RGB pixels, and obtaining color scale values of each channel. Each channel includes a first buffer space and a second buffer space, the first buffer space storing smaller color scale values, the second buffer storing larger color scale values, an average value of the minimum color scale values stored in the first buffer space is calculated to obtain a reference black, an average value of the maximum color scale values stored in the second buffer space is calculated to obtain a reference white. A color histogram stretching method using the obtained reference black and white adjusts the white balance of the raw image. | 04-24-2014 |
20140118573 | METHOD FOR WHITE BALANCE ADJUSTMENT - A white balance adjustment method includes capturing a raw image where an arrangement format of the raw image is BGb/GrR, extracting color scale values of each color channels, and obtaining cumulative proportion of color scale values in each channel. Cumulative proportion of each channels are compared with default minimum and maximum values, to get a cumulative proportion which is above a maximum value treated as a reference white, and a cumulative proportion below the minimum value treated as a reference black. The color scale values are re-quantized according to the obtained reference white and black, by using a color histogram equalization method. | 05-01-2014 |
20140118574 | METHOD FOR WHITE BALANCE ADJUSTMENT OF IMAGES - A white balance adjustment method includes capturing a raw image by an image capturing device where an arrangement format of the raw image is BGb/GrR, color scale values of each color channel are extracted, the color scale values of all pixels in B, Gb, Gr, and R channels are separately scanned, and predetermined number ranges are used to classify the color scale values, then obtaining a cumulative proportion of color scale values in each channel is obtained. The cumulative proportions of each channel are compared with default minimum and maximum values, to obtain a more-than-maximum as a reference white, and a less-than-minimum as a reference black. The color scale values are re-quantized, according to the reference white and black, and a color histogram stretching method is applied to complete the white balance adjustment. | 05-01-2014 |
20140146222 | AUTO-FOCUS METHOD - An auto-focus method to determine an optimum position of a lens module includes defining search boundaries and an allowable difference, randomly sampling current values within the search boundaries d | 05-29-2014 |
20140153120 | ACCURATE AUTO-FOCUS METHOD - An auto focus method includes: assigning searching boundaries L=InitL, R=InitR, and acquiring the resolutions f(L), f(R); defining the focused positions X | 06-05-2014 |