Colour difference detection device and online colour difference detection method
A detection device and a technology of difference detection, which are applied in the direction of color measurement device, color/spectral characteristic measurement, and color measurement using electric radiation detectors, etc., can solve the problems of spectrometers such as high price, poor color reproduction, and slow measurement speed. Achieve the effects of avoiding the interference of external light, improving the accuracy of color difference detection, and taking into account the detection speed
Pending Publication Date: 2019-05-07
苏州视幻智能科技有限公司
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Problems solved by technology
[0002] Due to the poor color reproduction of traditional RGB (including BAYER mode) color cameras, they are rarely used in the field of accurate color measurement. Spectrometers are used for high-precision color difference detection, but spectrometers are expensive and slow in measurement. It is used in occasions that require high speed and sampling frequency, such as online color difference detection, and is generally used in laboratories or offline sampling inspections
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[0028] The present invention will be described in further detail below through specific examples.
[0029] Such as Figure 1 to Figure 6 As shown, a color difference detection device 1 includes a frame, the frame is provided with a closed cavity, and the bottom of the cavity is provided with a shooting window 10 . Nine industrial cameras 5 are arranged on the top of the inner chamber of the frame, and the nine industrial cameras 5 form a 3×3 rectangular array.
[0030] Wherein in the present embodiment, the frame includes an upper fixed plate 1, a lower fixed plate 2 and several connecting rods 3 (4 in this embodiment) connecting the upper fixed plate 1 and the lower fixed plate 2, the nine An industrial camera 5 is fixed on the upper fixed plate 1, and the shooting window 10 is arranged on the lower fixed plate 2. The uniform light source is fixed on each connecting rod 3, and several sealing plates 4 are detachably fixed on the outside of the connecting rod 3. The detachab...
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Abstract
The invention discloses a colour difference detection device. The colour difference detection device comprises a frame; a closed inner cavity is arranged on the frame; a shooting window is arranged atthe bottom of the inner cavity; nine industrial cameras in 3*3 rectangular arrays are arranged on the top of the inner cavity of the frame; the front end of each industrial camera is provided with avisible light filter; the central wavelengths of various visible light filters are different; the central wavelength range of the nine visible light filters covers the wavelength range of the visiblelight; a uniform light source is arranged in the inner cavity; and the overlapping region of the shooting range of the nine industrial cameras is used as a colour difference detection sampling area. According to the colour difference detection device disclosed by the invention, online colour different detection is realized by shooting images by directly utilizing the industrial cameras in the ninearrays; the sample frequency is high; and the detection speed is relatively rapid. The invention further discloses an online colour difference detection method. The online colour difference detectionmethod is used for calculating values of L, a and b of an object to be detected by utilizing the colour difference detection device; and, the value of delta E<ab> is finally obtained, so that colourdifference is detected.
Description
technical field [0001] The invention relates to a color difference detection device, and also relates to an online color difference detection method using the color difference detection device. Background technique [0002] Due to the poor color reproduction of traditional RGB (including BAYER mode) color cameras, they are rarely used in the field of accurate color measurement. Spectrometers are used for high-precision color difference detection, but spectrometers are expensive and slow in measurement. It is used in the occasions that require high speed and sampling frequency, such as online color difference detection, and is generally used in laboratories or offline sampling inspections. Therefore, there is an urgent need for an online color difference detection device and detection method thereof with fast detection speed and high sampling frequency for fabrics or printed items. Contents of the invention [0003] The technical problem to be solved by the present inventi...
Claims
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Inventor 管人宝
Owner 苏州视幻智能科技有限公司