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new.py

+import os.path
+#from textwrap import wrap
+#from xxlimited import new
+from cv2 import perspectiveTransform
+import numpy as np
+import cv2
+import json
+from flask import Flask,request,Response
+import uuid
+
+def find_sheet_end_point(window):
+    window = window.reshape((4,2))
+    new_window = np.zeros((4,2),dtype=np.float32)
+
+    add= window.sum(axis=1)
+    diff = np.diff(window,axis=1)
+
+    new_window[0] = window[np.argmin(add)]
+    new_window[1] = window[np.argmin(diff)]
+    new_window[2] = window[np.argmin(add)]
+    new_window[3] = window[np.argmin(diff)]
+
+    return new_window
+   
+def ImageToText(image):
+    #path to save after the processed
+    path_file = ('static/%s.jpg'%uuid.uuid4().hex)
+    image=cv2.resize(image,(1300,800))
+    original =image
+
+    #convert image to grey
+    gray_image = cv2.cvtColor(image,cv2.COLOR_BGR2GRAY)
+    blurred_image = cv2.GaussianBlur(gray_image,(5,5),0)
+    edged_image = cv2.Canny(blurred_image,28,48)
+
+    contours,hierarchy=cv2.findContours(edged_image,cv2.RETR_LIST,cv2.CHAIN_APPROX_SIMPLE)
+    contours=sorted(contours,key=cv2.contourArea,reverse=True)
+
+    for contour in contours:
+        contour_perimeter = cv2.arcLength(contour,True)
+        contour_approximation = cv2.approxPolyDP(contour,0.02*contour_perimeter,True)
+
+        if len(contour_approximation)==4:
+            selected_window = contour_approximation
+            break
+
+    contour_approximation =find_sheet_end_point(selected_window)
+
+    points=np.float32([[0,0],[800,0],[800,800],[0,800]])
+
+    perspective=cv2.getPerspectiveTransform(contour_approximation,points)
+    wrap = cv2.warpPerspective(original,perspective,(800,800))
+
+    cv2.imwrite(path_file,gray_image)
+    return json.dumps(path_file)
+
+app = Flask(__name__)
+@app.route("/api/upload",methods=['POST'])
+
+def upload():
+    img = cv2.imdecode(np.fromstring(request.files['image'].read(),np.uint8),cv2.IMREAD_UNCHANGED)
+    img_proccessed = ImageToText(img)
+    return Response(response=img_proccessed,status=200,mimetype="application/json")
+app.run(host="0.0.0.0",port=5000)
+
+if __name__ == "_main_":
+    app.run()
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