Count Color Info
Function
After a color or gray image is input and a color space is selected, this Step will calculate the mean value, standard deviation, maximum, and minimum of the pixel values in the specified channel.
Usage Scenario
This Step is generally used to evaluate the image color or grayscale in measurement scenarios.
Input and Output
If the pixel values of the first channel in the RGB color space is input, the output data is as follows:
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The mean value of the pixel values of the first channel in the RGB color space
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The standard deviation of the pixel values of the first channel in the RGB color space
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The maximum of the pixel values of the first channel in the RGB color space
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The minimum of the pixel values of the first channel in the RGB color space
The input and output of this Step are shown as below.
Parameter Description
Color Space
Parameter description: This parameter specifies the color space of the input image.
Value list: RGB, HSV, HSI, and Gray.
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RGB (red, green, blue): A commonly used color space. This type of color space is based on red, green, and blue (primary colors), and the three primary colors are added together in various ways to reproduce a broad array of colors.
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HSV (hue, saturation, value): A color space that aligns with the way human vision perceives color-making attributes.
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HSI (hue, saturation, intensity): A color space that aligns with the way human describes and explains colors .
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Gray: A most basic color space. When the image only contains luminance information without color information, the gray color space can be used.
Default value: RGB
Channel
Parameter description: This parameter is used to select in which channel of the color space the color information will be calculated.
Value list: First, Second, and Third.
Default value: First.
Notes: The sequence of the channels corresponds to the sequence of the letters in the color space name. For example, the RGB color space has three channels, i.e., red, green, and blue, which correspond to the first, second, and third channels, respectively.
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When the Color Space is set to Gray, there is only one channel, and therefore you do not need to set the Channel parameter. |