created distinct py program to run image sliceing

.vscode/settings.json

+{
+    "python.linting.enabled": false
+}
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README.md

 # ai4hdr_backend
 
+## "sliceImage.py" program:
+Slices an image into even sized tiles. 
+Note: if the slice size doesn't fit evenly into the size of 
+      the original image, pixels will be lost.
+
+## Command line arguments
+ - arg1: name of image file used for slicing
+ - arg2: file name used as base for all slices
+ - arg3: width of new slices
+ - arg4: height of new slices
+ - arg5: directory to save slices 
+
+## Example run
+```bash
+python sliceImage.py ../image_database/GeoEye_After011310.jpg base 512 512 ../image_database/
+```
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ai4hdr_utils.py

@@ -8,14 +8,14 @@ def meanshiftSegmentation( image ):
     pass
 
 
-def sliceImage( imagePath: str, newFileBase: str, newSize: tuple, newPath: str=False ) -> int:
+def sliceImage( imagePath: str, newFileBase: str, newSize: tuple, newPath: str ) -> int:
     '''
     Creates slices of images given 
 
     imagePath  : path to image used for slicing
     newFileBase: used to rename each slice
     newSize    : width and height of new slices
-    newPath    : where to save new slices, cwd by default
+    newPath    : where to save new slicest
     
     returns:  dictionary containing the following information
     {
@@ -25,14 +25,9 @@ def sliceImage( imagePath: str, newFileBase: str, newSize: tuple, newPath: str=F
     }
     OR empty dictionary if slicing was unable to be completed
     '''
-    if not newPath:
-        newPath = pathlib.Path.cwd()
-    else:
-        newPath = pathlib.Path( newPath )
+    newPath = pathlib.Path( newPath )
 
     image = cv2.imread( imagePath )
-    
-    print( image.shape )
 
     width     = image.shape[0]
     height    = image.shape[1]
@@ -66,12 +61,4 @@ def sliceImage( imagePath: str, newFileBase: str, newSize: tuple, newPath: str=F
         "pixelsLost": pixelsLost,
         "sliceCount": newSliceCount,
         "slicePaths": newPaths
-    }
-
-if __name__ == "__main__":
-    cwd = pathlib.Path.cwd()
-    imgPath = cwd.joinpath( "GeoEye_After011310.jpg" )
-
-    newFileBase = "GeoEye_Slice"
-    newPath = cwd.joinpath( "sliced_images" )
-    sliceImage( str( imgPath ), newFileBase, ( 512, 512 ), newPath=str( newPath ) )
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+    }
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sliceImage.py

+import sys
+from ai4hdr_utils import sliceImage
+
+
+if __name__ == "__main__":
+    '''
+    Required arguments:
+    - arg1: image file used for slicing
+    - arg2: file name used as base for all slices
+    - arg3: width of new slices
+    - arg4: height of new slices
+    - arg5: directory to save slices 
+    '''
+
+    if len( sys.argv ) == 6:
+        imagePath   = sys.argv[1]
+        newFileBase = sys.argv[2]
+        newSize     = ( int( sys.argv[3] ), int( sys.argv[4] ) )
+        newPath     = sys.argv[5]
+        sliceImage( imagePath, newFileBase, newSize, newPath )
+    else:
+        print( "Invalid arg count" )
+
+    
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