New ScreenPanel

script/image.py

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+################################################################################################### 
+# Demonstrate creation of an image filters and new source based on filter.
+# Also demonstrate creation of image histogram and use of overlays.
+################################################################################################### 
+
+
+import ch.psi.pshell.imaging.Filter as Filter
+from ch.psi.pshell.imaging.Utils import *
+from ch.psi.pshell.imaging.Overlays import *
+import ch.psi.pshell.imaging.Pen as Pen
+
+last = None
+class MyFilter(Filter):
+    def process(self, image, data):
+        global last
+        image = grayscale(image)        
+        i=None
+        if last is not None:
+            i = sub(image,last, False)
+            i = rescale(i,100.0, 0, True)
+            i = add(i, last, True)
+            i = rescale(i,10.0, 0, True)
+        last = image        
+        return i
+
+def translate2(image, minV, maxV,inPlace):
+        range = float(maxV - minV)
+        scale = (255.0 / range) if (range > 0) else  1.0
+        offset = -minV
+        return rescale(image, scale,offset, inPlace)
+    
+    
+class MyFilter2(Filter):
+    def process(self, image, data):
+        image = grayscale(image)        
+        image = translate(image, 100, 200, True)
+        #image = rescale(image, 1.0, 200.0, False)
+        return image
+        
+
+#Setting the filter to a source
+img.setFilter(MyFilter2())