Fixed all stl errors, should now work properly.

config/config.json

@@ -1,4 +1,38 @@
 {
+    "weak": [
+        {
+            "name": "denoise_tv_chambolle",
+            "sigmaColor": 0.1,
+            "weight": 0.01,
+            "sigmaSpace": 3,
+            "channelAxis": 0,
+            "iterations": 1
+        },
+        {
+            "name": "median",
+            "ksize": 3
+        },
+        {
+            "name": "unsharp_mask_scikit",
+            "radius": 3,
+            "amount": 3,
+            "channelAxis": 1
+        },
+        {
+            "name": "median",
+            "ksize": 5
+        },
+        {
+            "name": "unsharp_mask_scikit",
+            "radius": 3,
+            "amount": 4,
+            "channelAxis": 0
+        },
+        {
+            "name": "gaussian",
+            "ksize": 5
+        }
+    ],
     "default": [
         {
             "name": "denoise_tv_chambolle",

src/main.py

@@ -49,7 +49,7 @@ class apply_filters:
                     # if no '=' in filter, it is a new filter
                     self.filters.append(filter)
                     i += 1
-                    self.params[i] = {}
+                    self.params[i] = {} # create empty dict for params
                 else:
                     # else it's a parameter for current filter
                     key, value = filter.split('=')
@@ -75,8 +75,8 @@ class apply_filters:
         self.height = self.img.shape[0]
         self.print_size(self.img.shape)
         print(self.dpi)
-        fig = plt.figure(figsize=(self.width, self.height),
-                         frameon=False, dpi=1)
+        fig = plt.figure(figsize=(self.width/self.dpi, self.height/self.dpi),
+                         frameon=False, dpi=self.dpi)
 
         ax = plt.Axes(fig, [0., 0., 1., 1.])
         ax.set_axis_off()
@@ -189,9 +189,7 @@ class apply_filters:
             # Apply all filters
             for i, filter_name in enumerate(self.filters):
                 filter = self.filter_factory(filter_name)
-                #print(self.img.dtype)
                 filter.apply(self, self.params[i+1])
-                #print(self.img.dtype)
 
     def print_size(self, size):
         print("Height: " + str(size[0]), file=sys.stderr)
@@ -229,24 +227,24 @@ class apply_filters:
             self.img = self.img * 255
             self.img = self.img.astype(np.uint8)
 
-        # Modify image to make it more suitable depth
-        rescaled = (1 + (1 - self.img/255)/6) * 255 / 10 # for positive forms ?
+        # Make depth map from image
+        # TODO make this depth/height a param
+        self.img = (0.5 + (1 - self.img/255)/6) * \
+            255 / 10  # for positive forms ?
         if self.mirror is True:
-            rescaled = (2 - (1 - self.img/255)/6) * 255 / 10  # for negative forms
+            self.img = (1 - (1 - self.img/255)/6) * \
+                255 / 10  # for negative forms
         
-        # TODO: i dont know how to make white surrounding be extruded
-
         # Add zero padding to image
-        # TODO this better be done in the next function to keep dimensions intact
-        self.height = self.img.shape[0] + 2
-        self.width = self.img.shape[1] + 2
-        self.img = np.zeros([self.height, self.width])
-        self.img[1:-1:1, 1:-1:1] = rescaled
+        self.height = self.img.shape[0]
+        self.width = self.img.shape[1]
+        self.print_size(self.img.shape)
 
         # Create meshgrid for 3D model
         # This sets the scale of stl model
-        x = np.linspace(0, 25.4 * self.width/self.dpi, self.width)
-        y = np.linspace(0, 25.4 * self.height/self.dpi, self.height)
+        # TODO this is an absolutely random constant that fits the scale...
+        x = np.linspace(0, self.width / 23.6715, self.width)
+        y = np.linspace(0, self.height / 23.6715, self.height)
         self.meshgrid = np.meshgrid(x, y)
 
     def make_mesh(self):
@@ -268,12 +266,12 @@ class apply_filters:
         '''
 
         # Add the image matrix to the 2D meshgrid and create 1D array of 3D points
-        vertice_arr = np.vstack(list(map(np.ravel, self.meshgrid))).T
+        vertex_arr = np.vstack(list(map(np.ravel, self.meshgrid))).T
         z = (self.img / 10).reshape(-1, 1)
-        vertice_arr = np.concatenate((vertice_arr, z), axis=1)
+        vertex_arr = np.concatenate((vertex_arr, z), axis=1)
 
         # Convert 1D array back to matrix of 3D points
-        vertice_arr = vertice_arr.reshape(self.height, self.width, 3)
+        vertex_arr = vertex_arr.reshape(self.height, self.width, 3)
 
         count = 0
         vertices = []
@@ -283,28 +281,73 @@ class apply_filters:
         def add_faces(c):
             faces.append([c, c + 1, c + 2])
             faces.append([c + 1, c + 3, c + 2])
-            c += 4
-            return c
+            return c + 4
 
+        # TODO: this can be done more efficiently
         # Iterate over all vertices, create faces
-        for j in range(self.width - 1):
-            for i in range(self.height - 1):
+        for i in range(self.height - 1):
+            for j in range(self.width - 1):
 
-                vertices.append([vertice_arr[i][j]])
-                vertices.append([vertice_arr[i][j+1]])
-                vertices.append([vertice_arr[i+1][j]])
-                vertices.append([vertice_arr[i+1][j+1]])
+                vertices.append([vertex_arr[i][j]])
+                vertices.append([vertex_arr[i][j+1]])
+                vertices.append([vertex_arr[i+1][j]])
+                vertices.append([vertex_arr[i+1][j+1]])
 
                 count = add_faces(count)
 
         # Add faces for the backside of the lithophane
-        # This makes it closed, so it can be printed
-        vertices.append([vertice_arr[0][0]])
-        vertices.append([vertice_arr[0][self.width - 1]])
-        vertices.append([vertice_arr[self.height - 1][0]])
-        vertices.append([vertice_arr[self.height - 1][self.width - 1]])
+        # TODO: this doesn't work, creates naked edges
+        null_arr = np.copy(vertex_arr)
+        for i in range(self.height):
+            for j in range(self.width):
+                null_arr[i][j][2] = 0
+    
+        # Back side faces
+        for i in range(self.height - 1):
+            for j in range(self.width - 1): 
+
+                vertices.append([null_arr[i][j]])
+                vertices.append([null_arr[i+1][j]])
+                vertices.append([null_arr[i][j+1]])
+                vertices.append([null_arr[i+1][j+1]])
+
+                count = add_faces(count)
+
+        # Horizontal side faces
+        for j in range(self.height - 1):
+            vertices.append([vertex_arr[j][0]])
+            vertices.append([vertex_arr[j+1][0]])
+            vertices.append([null_arr[j][0]])
+            vertices.append([null_arr[j+1][0]])
+
+            count = add_faces(count)
+
+            max = self.width - 1
+
+            vertices.append([vertex_arr[j+1][max]])
+            vertices.append([vertex_arr[j][max]])
+            vertices.append([null_arr[j+1][max]])
+            vertices.append([null_arr[j][max]])
+
+            count = add_faces(count)
+
+        # Vertical side faces
+        for j in range(self.width - 1):
+            vertices.append([vertex_arr[0][j+1]])
+            vertices.append([vertex_arr[0][j]])
+            vertices.append([null_arr[0][j+1]])
+            vertices.append([null_arr[0][j]])
+
+            count = add_faces(count)
+
+            max = self.height - 1
+
+            vertices.append([vertex_arr[max][j]])
+            vertices.append([vertex_arr[max][j+1]])
+            vertices.append([null_arr[max][j]])
+            vertices.append([null_arr[max][j+1]])
 
-        count = add_faces(count)
+            count = add_faces(count)
 
         # Convert to numpy arrays
         faces = np.array(faces)