Color Replacement and color range selection

The color adjustment command is similar to the color/saturation command we learned earlier. It can be said that it is actually a branch of the color/saturation command function. When using the image, click the color area to be changed. The gray-scale image of the valid area appears in the setting Box (select the display selection option). The valid area is white, the black area is invalid. Changing the color tolerance can extend or narrow the range of valid areas. You can also use the add to sampling tool

And subtract tool from sampling

To expand and narrow down the limited scope. The operation method is the same as the color phase/saturation. Although color tolerances and increase/decrease sampling are aimed at changing the valid region range, it should be said that the change of color tolerances is based on the sampling range.
In addition, you can click the grayscale image to change the effective range. However, the effect is not as intuitive and accurate as in the image. In addition to clicking OK, you can also drag the mouse in the image or grayscale image to observe the change in the valid range.

 

 

[Color = # ff0000]0710[/Color]
We have already used this grayscale image to express the range in course #04. At that time, we did not learn a selection tool, it is used to express the color range command for selecting valid ranges through grayscale images.
Click Select> color range to start the command, as shown in the left figure below. Click or drag the selected color in the image to increase or decrease the color sampling and color tolerance. You can select a fixed color in the top selection. You can change the preview effect of the image in the selection preview at the bottom. The image here refers to the image opened in Photoshop. As for the reverse option, the selected area is selected alternately. The bottom right figure shows the effect of selection.

 

In addition to directly selecting the color range for the entire graph, you can also create a selection area in advance, and then select the selection command using the color range, in this way, only the selected range will appear in the preview graph of the color range command, and the generated range will be limited to the original range, as shown in figure 3 below.
Of course, you can also subtract a region after creating a selection area for the full graph. The final constituency shown in the following figure is used as an example. You can use the rectangular box selection tool after creating a constituency for the entire graph.

<M/shift m <minus the container and gantry crane on the right.