HandWritten Flowchart Recognition with Flask Backend Service

Sample Input Image

• command line: python flowchart_recognition.py "image file name" [parameters]
  If image file name were not given, it'll be asking image file name

• GUI: python GUI.py

• flask backend service: python main.py

Result

Id	Name	Position	Shape	Line
0	DATABASE	Inside	square
2	LORD BALANCER	Inside	square	DATABASE
4	LMN	Inside	square	LORD BALANCER

• Position: inside / outside
• Shape: triangle / square / circle
• Line: connected nodes to go

parameters:

• padding: the distance range between inside text and boundingRect of shapes
• offset: used to decide direction(AC or BD) of curved lines
• arrow: length of arrow

Output Image for Sample Input Image