[Term Entry] Python Pillow - Image: .merge()

content/pillow/concepts/image/terms/merge/merge.md

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+---
+Title: '.merge()'
+Description: 'Merges set of single-band images into a new multi-band image.'
+Subjects:
+  - 'Computer Science'
+  - 'Data Science'
+Tags:
+  - 'Computer Vision'
+  - 'Images'
+  - 'Pillow'
+  - 'Values'
+CatalogContent:
+  - 'learn-python-3'
+  - 'paths/computer-science'
+---
+
+The **`.merge()`** function in Pillow combines multiple single-band images into a new multi-band image. This is particularly useful when working with multispectral or multichannel images, such as RGB or CMYK images, where individual channels can be processed separately before merging them into a final image.
+
+## Syntax
+
+```pseudo
+Image.merge(mode, bands)
+```
+
+- `mode`: The mode of the new multi-band image (e.g., `"RGB"`, `"CMYK"`, etc.).
+- `bands`: A tuple containing the individual image bands to be merged. Each band should be a single-channel (grayscale) image.
+
+## Example
+
+The image to be used for this example is:
+
+![Boston Skyline](https://raw.githubusercontent.com/Codecademy/docs/main/media/Boston.jpg)
+
+The code below splits the above image into its individual bands and then merges them in a different order:
+
+```py
+from PIL import Image
+
+# Open the image
+image1= Image.open('media/Boston.jpg')
+im = image1.resize((400,400))
+
+# Split the image into its RGB channels
+r,g,b = im.split()
+
+# Merge the bands in a different order
+new_image= Image.merge('RGB', (b,r,g))
+new_image.show()
+```
+
+The output will be:
+
+![Merged Boston Skyline](https://raw.githubusercontent.com/Codecademy/docs/main/media/merged-boston.png)