图形数字化软件。可以将曲线图转化为数据与等式。当用仪表做出曲线图后，用扫描仪扫入计算机，便能用此软件处理了。
Introduction
This open source, digitizing software converts an image file showing a graph or map, into numbers. The image file can come from a scanner, digital camera or screenshot. The numbers can be read on the screen, and written or copied to a spreadsheet.
The process starts with an image file containing a graph or map. The final result is digitized data that can be used by other tools such as Microsoft Excel and Gnumeric.
Nifty Features
Automatic grid line removal
Automatic point matching
Automatic curve tracing
Automatic axes matching
Handles cartesian, polar, linear and logarithmic graphs
Support for drag-and-drop and copy-and-paste makes data transfer fast and easy
Image processing highlights data by removing grid lines and backgrounds
Context sensitive help, user manual and tutorials explain every feature
Preview windows give immediate feedback while modifying settings
Dates and times are imported with the Date/Time Converter
Engauge Digitizer is completely open source and free courtesy of Sourceforge
Cross platform capability
Sample Screenshots
Graph Screenshot
The screenshot below shows version 1.5 working on the inverse sample file. Only 16 clicks and 2 keystrokes were involved in the following steps
- Import a file
- Manually create three axis points
- Click on curve segments to automatically autogenerate points
- Bring up the graph geometry window
Map Screenshot
The screenshot below shows version 1.5 working on the map sample file.
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