resizing captured image and fix issues.

app/src/main/python/preprosessgreyscale.py

@@ -5,9 +5,12 @@ import base64
 import io
 
 def main(data):
+
     decoded_data = base64.b64decode(data)
     np_data = np.fromstring(decoded_data,np.uint8)
+
     img = cv2.imdecode(np_data,cv2.IMREAD_UNCHANGED)
+    img = cv2.resize(img, (100, 100))
     img_gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
 
 
@@ -15,8 +18,32 @@ def main(data):
     pil_im = cv2.dilate(img_gray, kernel, iterations=1)
     pil_im = cv2.erode(pil_im, kernel, iterations=1)
 
-   # pil_im = cv2.adaptiveThreshold(cv2.medianBlur(pil_im, 5), 255, cv2.ADAPTIVE_THRESH_GAUSSIAN_C, cv2.THRESH_BINARY, 31, 5)
-    pil_im = cv2.threshold(cv2.GaussianBlur(pil_im, (9, 9), 0), 0, 255, cv2.THRESH_BINARY + cv2.THRESH_OTSU)[1]
+    pil_im = cv2.morphologyEx(pil_im, cv2.MORPH_OPEN, kernel)
+
+    #pil_im = cv2.morphologyEx(pil_im, cv2.MORPH_CLOSE, kernel)
+
+
+    #pil_im = ImageEnhance.Brightness(pil_im)
+    #pil_im = ImageEnhance.Color(pil_im)
+   # pil_im = ImageEnhance.Contrast(pil_im)
+
+    # Rebuild ImageEnhance.Brightness on-the-fly
+    #pil_im = Image.new(pil_im.mode, pil_im.size, 0)
+    #pil_im = Image.blend(pil_im, pil_im, factor)
+
+    #image = Image.open(np_data)
+    #pil_im = ImageEnhance.Contrast(image)
+    pil_im = cv2.GaussianBlur(pil_im,(5,5),0)
+    pil_im = cv2.medianBlur(pil_im,5)
+    pil_im = cv2.adaptiveThreshold(pil_im,255,cv2.ADAPTIVE_THRESH_GAUSSIAN_C, cv2.THRESH_BINARY,11,2)
+
+
+
+
+
+
+    #pil_im= cv2.threshold(pil_im,0,255,cv2.THRESH_BINARY+cv2.THRESH_OTSU)
+    #pil_im = cv2.threshold(cv2.GaussianBlur(pil_im, (9, 9), 0), 0, 255, cv2.THRESH_BINARY + cv2.THRESH_OTSU)[1]
 
 
     pil_im = Image.fromarray(pil_im)

app/src/main/res/layout/activity_image_process.xml

@@ -22,7 +22,7 @@
         android:id="@+id/capture"
         android:layout_width="243dp"
         android:layout_height="66dp"
-        android:text="Button"
+        android:text="Scan"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
@@ -45,7 +45,7 @@
         android:id="@+id/textfinal"
         android:layout_width="287dp"
         android:layout_height="71dp"
-        android:text="TextView"
+        android:text=""
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"