Simple Way to Reduce Blurriness of Wildlife Images

Morning dew, fog, rain, high humidity, or frost – these are just some conditions that can lead to blurry images from your cameras. But don’t worry, you can fix it! 😊

Did you know there are simple methods to find blurry images and improve them? No magical AI required!

Here’s how:

Compute the Laplacian of the image and take its variance. This gives you a sharpness score – the smaller the score, the blurrier the image.

Once you know your data, you can set a threshold to detect blurry images and decide when they need sharpening.

Now, for sharpening methods, there are plenty of options! Let me highlight two:

1️⃣ Unsharp Mask – Yes, it sounds ironic, but this method makes your photos sharper!

2️⃣ Histogram-Based Sharpening – For this demo, I used CLAHE (Contrast Limited Adaptive Histogram Equalization). CLAHE is not only great for blurry images but has many other wildlife applications – I’ll cover these in my next post!

✨ Here’s the simple procedure I followed for this demo:

1. Crop out the white bottom bar.

2. Compute the sharpness of the image.

3. If sharpness < 5.0, run CLAHE. (Thresholds will vary depending on your images and camera setup.)