National Instruments IMAQTM 用户手册
Chapter 3
Making Grayscale and Color Measurements
3-2
ni.com
Table 3-1. Tools Palette Functions
Tool Name
Function
None
Disable the tools.
Selection Tool
Select an ROI in the image and adjust the position
of its control points and contours.
of its control points and contours.
Action: Click the appropriate ROI or control
points.
points.
Point
Select a pixel in the image.
Action: Click the appropriate position.
Line
Draw a line in the image.
Action: Click the initial position and click again
on the final position.
on the final position.
Rectangle
Draw a rectangle or square in the image.
Action: Click one corner and drag to the opposite
corner.
corner.
Rotated Rectangle
Draw a rotated rectangle in the image.
Action: Click one corner and drag to the opposite
corner to create the rectangle. Then, click on the
lines inside the rectangle and drag to adjust the
rotation angle.
corner to create the rectangle. Then, click on the
lines inside the rectangle and drag to adjust the
rotation angle.
Oval
Draw an oval or circle in the image.
Action: Click the center position and drag to the
appropriate size.
appropriate size.
Annulus
Draw an annulus in the image.
Action: Click the center position and drag to the
appropriate size. Adjust the inner and outer radii,
and adjust the start and end angle.
appropriate size. Adjust the inner and outer radii,
and adjust the start and end angle.
Broken Line
Draw a broken line in the image.
Action: Click to place a new vertex and
double-click to complete the ROI element.
double-click to complete the ROI element.