Color temperature measurement method, color temperature measurement device
A measurement method and measurement device technology, applied in the field of photography, can solve the problems of high price, high professionalism in operation, and large equipment volume, and achieve the effect of low measurement cost
Active Publication Date: 2021-05-14
APUTURE IMAGING IND CO LTD
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[0003] The object of the present invention is to provide a color temperature measurement method and a color temperature measurement device, aiming to solve the problems in the prior art that the traditional spectrometer or light meter is used to test the color temperature, which has large equipment volume, high price and high professionalism in operation
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[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0032] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...
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The invention belongs to the technical field of photography, and in particular relates to a color temperature measurement method and a color temperature measurement device. Wherein, the color temperature measurement method includes: acquiring the image data of the environment image, and generating the first picture according to the image data; acquiring the pixel values R, G, and B of the three primary colors of each pixel in the first picture to calculate the average value of the first picture Pixel value R 平 , G 平 , B 平 ; Calculate the pixel offset X; where the pixel offset X=(R 平 -B 平 ) / (R 平 +G 平 +B 平 ); Substitute the pixel offset X into the preset formula y=ax 4 +bx 3 +cx 2 +dx+e is calculated to obtain the color temperature value Y of the first picture, where a, b, c, d, and e are all constants. The technical scheme of the invention solves the problems in the prior art that the traditional spectrometer or light meter is used to test the color temperature, which has large equipment volume, high price and high professionalism in operation.
Description
technical field [0001] The invention belongs to the technical field of photography, and in particular relates to a color temperature measurement method and a color temperature measurement device. Background technique [0002] Color temperature measurement can provide useful and actionable information for the control of scene division, and plays an important role in film and television shooting technology. Color temperature measurement is very useful when dealing with mixed light sources, many of which have different color temperatures, and it is not certain that it will work well in the final image. However, the use of traditional spectrometers or light meters to test color temperature has the disadvantages of large equipment, high prices, and high professionalism in operation. Contents of the invention [0003] The object of the present invention is to provide a color temperature measurement method and a color temperature measurement device, aiming to solve the problems ...
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IPC IPC(8): G01J5/60G06T7/90
CPCG01J5/60G06T7/90
Inventor 张春谢奕
Owner APUTURE IMAGING IND CO LTD