New Digitizer
The New Digitizer is turned off by default in Origin 9.1SR0.
To turn it on, run the following in Script Window.
@und=1
New Digitizer GUI
(ORG-8762)
Improvements to GUI:
Menus are added
Relevant buttons are grouped
Axes tab and Data Tabs to show Axis settings and picked data values.
More hints
Auto Trace
These four new methods help customers digitize line object more simple and convenient.
Auto Trace Line by Points
Auto Pick Point by Grids
Area Auto Trace
Boundary-limited Area Auto Trace
Auto Trace Line by Points
If Auto Trace Lines by Points is enabled and a data point is selected as the target point, the other data points in the same curve (or more accurate, the same part of the curve) will be auto traced and picked up.
To use this, click the 
Auto Pick Point by Grids
Use the Auto Pick Point by Grids object (a rectangle object with grid lines in either X or Y directions) to auto select data points. The data points intersect with grid lines will be selected and picked up.
To use this tool, click the 
If the result point is not on the curve, click 
In order to reorder the points of the result graph, click 
In order to change the grid direction and density, you need to select Settings:Digitize Settings from the menu item and do the settings in the Digitize Settings dialog in advance:
Area Auto Trace
Use the Area Auto Trace object (a rectangle object with grid lines in either X or Y directions) to auto trace line. The data points intersect with grid lines will be selected as the target point, the other data points in the same curve (or more accurate, the same part of the curve) will be auto traced and picked up.
To use this tool, click the button, or the Digitize:Area Auto Trace menu items to enable, then in the original image, click and drag the cursor to select the area of the target points.
In order to change the grid direction and density, you need to select Settings:Digitize Settings from the menu item and do the settings in the Digitize Settings dialog in advance
In the Data tab, you can specify whether to reduce the result data points of each line by Pixel Reduction Factor. Select Settings: Digitize Settings to bring up the dialog, go to Auto Trace branch to change the default value of Pixel Reduction Factor.
Image Pre-processing
Origin 9.1 provides options to remove gridlines or clear the background color from the original graph, so that the data plot itself displays clearer
Remove Grid Lines
To use the option, select Image: Remove Cartesian Gridlines from the Digitizer menu. You can Undo or Reset the image if the output is not what you want.
Remove Background
To use the option, select Image: Clear Background from the Digitizer menu
Rotate
To use the option, click the 
Ternary and Polar coordinate
Now Origin can not only digitize cartesian coordinate graphs, but also polar and ternary
Ternary Coordinate
To digitize a graph in ternary coordinate system, you should define the coordinate first.
Click the menu items Axes:Ternary Coordinate...,
Ternary Coordinate Settings dialog pops up for you to define the axes orientation in the imported image, either counter-clockwise or clockwise. Click OK to apply the settings and close dialog
When the Ternary coordinate system is chosen, and the
button is clicked, three reference points (P1, P2 and P3) are shown in the image. Drag the points to three vertexes of the ternary plot, and set the corresponding axes value
