Add run guide and demos

README.md

@@ -1,2 +1,36 @@
 # squeeze
 content-aware image resizing using seam carving algorithm written in python
+
+## Getting Started
+program guide:
+```
+usage: Remove specified columns and rows from input image. [-h] -i i [-c i] [-r i] [-v]
+
+optional arguments:
+  -h, --help  show this help message and exit
+  -i i        image path
+  -c i        -c <int> columns to remove, default: 0
+  -r i        -r <int> rows to remove, default: 0
+  -v          -v store each step seam into output directory, default: False (default: False)
+```
+example:
+```bash
+cd squeeze
+sudo apt install virtualenv
+virtualenv -p python3.9 venv #Install it in case it's not already installed
+source venv/bin/activate
+pip3 install -r requirements.txt
+
+python3 main.py -i test/test_data/input.jpg  -c 2 -r 3 -v 
+```
+
+## Demos
+
+#### dual-gradient energy calculation
+![energy](test/test_data/input-dual-gradient.png)
+
+#### horizontal seam
+![horizontal](output/rows_1.png)
+
+#### vertical seam
+![vertical](output/columns_4.png)