Heat Map

Python package which can be used to generate and overlay a heat map on the given image.

Reqruirements

Python 3.7 (recomended, otherwise any version 3.x should work)

OpenCV
```
$ pip install opencv-python
```

Numpy
```
$ pip install numpy
```

Usage

original_image: Original image on which to overlay heatmap
heat_map_2d_array: 2d numpy array with intensity values
kernel_size: Size of the area in which heat of the specific location will be spread with Gaussian Kernel
opacity: Opacity specifies the opacity level of the heat map
cmap: Cmap is the color distribution for the heatmap. Any value from these can be used: https://docs.opencv.org/master/d3/d50/group__imgproc__colormap.html
save_path: Path of the directory where to save generated heatmap

Example

An example python code is available in example directory. To execute this code change directory to example and run following command: $ python example.py.

Then a resulting image named heatmap.jpg will be created in the same directory.

Reference image (interior-top-view.jpg) in the samples folder used in this example is taken from freepik.com provided by MarySan2000. Link to the image is: https://www.freepik.com/premium-vector/apartment-design-with-furniture-top-view-architectural-plan-kitchen-bathroom-bedroom-living-room_7283209.htm

Samples

Using different Sigma Values


Sigma=5	Sigma=25	Sigma=55	Sigma=85

Using different Alpha Values


Opacity=0.1	Opacity=0.3	Opacity=0.5	Opacity=0.7	Opacity=0.9