Engauge Digitizer 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。

Engauge Digitizer is an open source, digitizing software that 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.

Engauge (from en "make" and gauge "to measure") verb meaning to convert an image file containing a graph or map, into numbers.

The term "Engauge" in Engauge Digitizer was invented for this project, since there seems to be no similar term in common use.