METHOD FOR CALIBRATING DEVIATION OF OECFs AND APPARATUS THEREOF
AssigneeNovatek Microelectronics Corp.
InventorYu-Chuan Shen
Life of this patent
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Abstract
A method suitable for calibrating the deviation of opto-electronic conversion functions (OECFs) in an imaging apparatus is provided. The method of calibrating the deviation of OECFs comprises the following steps. First, the imaging apparatus captures a first image. Next, the imaging apparatus performs an image calibration process with respect to the first image to capture a second image and simultaneously obtain an OECF set. The OECF set includes at least an optical characteristic value of the second image and at least an electrical characteristic value of the imaging apparatus. Finally, the aforementioned steps are repeated to obtain a number of images and their corresponding OECF sets.
Claims20
A method for calibrating the deviation of opto-electronic conversion functions (OECFs), suitable for calibrating the deviation of OECFs in an imaging apparatus, comprising:
- capturing a first image through the imaging apparatus;
- performing an image calibration with respect to the first image using the imaging apparatus to capture a second image and simultaneously obtain an opto-electronic conversion factor (OECF) set, wherein the OECF set includes at least an optical characteristic value of the second image and at least an electrical characteristic value of the imaging apparatus;
- and
- repeating the aforementioned steps to obtain a plurality of images and corresponding OECF sets.
An apparatus for calibrating the deviation of opto-electronic conversion functions, comprising:
- a light source;
- a physical reference object disposed within the illuminating range of the light source;
- an imaging device disposed within the illuminating range of the light source for capturing a plurality of images of the physical reference object;
- and
- an image calibration unit connected to the imaging device for calibrating the first image.
Dependencies are inferred from the claim text.