Panasonic MICRO-IMAGECHECKER AX40 User Manual page 3

Workings of Color Extraction
AX40
Color system
AX40 uses the L*C*h color system converted from the RGB data of
the image. Fig.4 shows the image of the three attributes, Hue,
Luminosity and Saturation, in L*C*h color sytem.
Hue: The Color such as red, blue or yellow.
Luminosity: The lightness of color such as light or dark.
Saturation: The vividness of color such as dull or vivid.
Fig.5 shows the ring image of Hue which is called the color circle.
Color Range
By registering two different parts, the fruit part of the below apple will be extracted.
The extracted color has its color range. The actual range of the extracted color is specified across three attributes, Hue, Luminosity
and Saturation. In this case of Fig.6 shows and explains the Hue only.
Fig.7 explains how the specified color is deleted in the extracted color range.
The specified color and colors in the smaller range (in the figure shows "a") are going to be deleted. This may give you unexpected
color to be deleted. By this, the display image is immediately reflected with this change. Note that you may not get the desired image.
in some cases. (Fig. 8)
Two different part to be registered.
Color image
Register two colors in A
Changing the size of the color specify window
The window size can be changed in 1x1 to 32x32 pixels.(Only available when New, Add or Delete.)
The bigger window ensures to widen the range of extraction color at a time. This is effective to extract the mottled color
objects like the apple below or to extract the part which is too small to be specified.
1.Confirm that there is the color
specify window appears.
Color specify window
The part to be deleted.
Fig.6 Extracted color range
Display Color:
Group A
Fig.8 Display images by the color extraction.
2. Press the B key and
select Size Change.
Size Change
White
Luminosity
Hue
Saturation
Black
Fig.4 An image of Color Space
Specified to be deleted
Fig.7 The workings of deleting extracted color range
Extracted image
(An image to be inspected)
3. A start mark is displayed. Adjust the size and press the
ENTER key to determine, and then the mark moves
diagonally, if you wish to re-size, adjust it again and
press the ENTER key.
3
Fig.5 An image of Hue circle
a<b
a b
Deleted
Unable to be
displayed/extracted.