Migrate PimpedWebcam

content/projekt/PimpedWebcam/index.md

@@ -5,7 +5,7 @@ status: Aktiv
 difficulty: einfach
 time: ~1h
 date: 2020-05-07
-image: /images/PimpedWebcam/webcam_modified.jpg
+image: webcam_modified.jpg
 keywords: webcam, opencv, akvcam
 ---
 
@@ -45,15 +45,17 @@ werden (ja, auch auf die Konsole ... ;). Damit stehen einfachen Manipulationen T
 Hier mal die Resultate, zwecks Vergleich
 
 vorher:
+
 <img style="max-width: 300px"
 alt="ohne"
-src="/images/PimpedWebcam/webcam_blank.jpg"
+src="webcam_blank.jpg"
 />
 
 und nachher:
+
 <img style="max-width: 300px"
 alt="ohne"
-src="/images/PimpedWebcam/webcam_modified.jpg"
+src="webcam_modified.jpg"
 />
 
 Hint: Die Kamera war wohl abgeklebt ...
@@ -100,66 +102,66 @@ vorgesehen mit folgendem Ablauf:
 
 virtcam.sh:
 
-```Bash
-    echo "Installing video4 (output) / video5 (capture) virtual devices ..."
-    cd ~/akvcam/src
-    sudo modprobe videodev
-    sudo insmod akvcam.ko
-    echo "Starting 'stream modifier' application ..."
-    echo "Activating (cv) environment ..."
-    source ~/cv/bin/activate
-    cd ~/cv
-    ls /dev/video?
-    python3 funcam.py > /dev/video4 # video4 is output device -> video4 is capture
-    echo "Removing virtual (camera) devices ..."
-    sudo rmmod akvcam.ko
-    echo "Done."
+```bash
+echo "Installing video4 (output) / video5 (capture) virtual devices ..."
+cd ~/akvcam/src
+sudo modprobe videodev
+sudo insmod akvcam.ko
+echo "Starting 'stream modifier' application ..."
+echo "Activating (cv) environment ..."
+source ~/cv/bin/activate
+cd ~/cv
+ls /dev/video?
+python3 funcam.py > /dev/video4 # video4 is output device -> video4 is capture
+echo "Removing virtual (camera) devices ..."
+sudo rmmod akvcam.ko
+echo "Done."
 ```
 
 Die eigentliche Action erfolgt im Python-Script ('funcam.py'):
 
-```Python
-    import numpy as np
-    import datetime, time
-    import sys
-    import cv2
+```python
+import numpy as np
+import datetime, time
+import sys
+import cv2
 
-    # Hint: print() to stderr (fh#2) as the actual video stream goes to stdout (fh#1)!
-    print("funcam started ...",file=sys.stderr)
+# Hint: print() to stderr (fh#2) as the actual video stream goes to stdout (fh#1)!
+print("funcam started ...",file=sys.stderr)
 
-    cap = cv2.VideoCapture(0) # TODO: You have to verify, if /dev/video0 is your actual webcam!
-    if not cap.isOpened(): # if not open already
-        cap.open() #make sure, we will have data
-    # Adjust channel resolution & use actual
-    cap.set(3, 640)
-    cap.set(4, 480)
+cap = cv2.VideoCapture(0) # TODO: You have to verify, if /dev/video0 is your actual webcam!
+if not cap.isOpened(): # if not open already
+    cap.open() #make sure, we will have data
+# Adjust channel resolution & use actual
+cap.set(3, 640)
+cap.set(4, 480)
 
-    while(cap.isOpened()):
-        try:
-            ret, frame = cap.read()
-            if ret==True:
+while(cap.isOpened()):
+    try:
+        ret, frame = cap.read()
+        if ret==True:
 
-                frame4 = cv2.cvtColor(frame.copy(),cv2.COLOR_BGRA2RGB) #   Correct color space
+            frame4 = cv2.cvtColor(frame.copy(),cv2.COLOR_BGRA2RGB) #   Correct color space
 
-                # Now: The fun stuff! -------------------------------------------------------------------------------------------
+            # Now: The fun stuff! -------------------------------------------------------------------------------------------
 
-                # ... <your job in here, use cv2.line/cv2.rectangle etc. freely but be careful w/ time consuming operations!> ...
+            # ... <your job in here, use cv2.line/cv2.rectangle etc. freely but be careful w/ time consuming operations!> ...
 
-                # As a sample, we display the current time
-                t = time.strftime("%H:%M:%S", time.localtime())
-                cv2.putText(frame4, t, (505,472), (cv2.FONT_HERSHEY_DUPLEX), 1.4, (0, 0, 0), 4, cv2.LINE_AA)
+            # As a sample, we display the current time
+            t = time.strftime("%H:%M:%S", time.localtime())
+            cv2.putText(frame4, t, (505,472), (cv2.FONT_HERSHEY_DUPLEX), 1.4, (0, 0, 0), 4, cv2.LINE_AA)
 
-                # End of fun stuff! ---------------------------------------------------------------------------------------------
+            # End of fun stuff! ---------------------------------------------------------------------------------------------
 
-                # Write raw output (pipe/redirect to video device externally!)
-                sys.stdout.buffer.write(frame4.tobytes())
-            else:
-                break
-        except:
+            # Write raw output (pipe/redirect to video device externally!)
+            sys.stdout.buffer.write(frame4.tobytes())
+        else:
             break
+    except:
+        break
 
-    cap.release()
-    print("\nfuncam terminated.",file=sys.stderr)
+cap.release()
+print("\nfuncam terminated.",file=sys.stderr)
 ```
 
 ## Arbeitsablauf