shellrc: added alias to vectorize a raster image

Author: davidandreoletti

.oh-my-shell/shellrc/plugins/image/aliases.sh

@@ -7,3 +7,7 @@ alias image_concat_vertically="convert -append "
 
 # Usage: concat_images_horizontally in1.jpg in2.jpg in3.jpg out.jpg
 alias image_concat_horizontally="convert +append "
+
+# Vectorize a raster image 
+# Usage: image_raster_to_vector "/path/to/input.png" "/path/to/output.svg"
+alias image_raster_to_vector="convert "$input_image" -threshold 50% -monochrome "$temp_pbm""

.oh-my-shell/shellrc/plugins/image/functions.sh

@@ -0,0 +1,12 @@
+f_image_convert_raster_to_vector() {
+    local input_file="$1"
+    local output_file="$2"
+    local pbm_file="/tmp/$RANDOM.pbm"
+
+    # Convert to monochrome PBM using ImageMagick
+    magick convert "$input_file" -threshold 50% -monochrome "$pbm_file"
+    # Convert PBM to SVG using Potrace
+    potrace -s -o "$output_file" "$pbm_file"
+    # Clean up the intermediate PBM file
+    rm "$pbm_file"
+}