Apply image filters
You need to apply filters to hundreds of images—blur, sharpen, edge detection, and other enhancements.
Updated Open in Colab
Adjust image opacity
You need to make hundreds of images semi-transparent for backgrounds, overlays, or watermarks.
Images · Notebook · Updated
Colab runs it in your browser. If it calls a model provider, it asks for that provider's API key in a cell.
How it works
You adjust image transparency using a custom UDF that modifies alpha channels (relies on PIL/Pillow). This gives you precise control over transparency levels.
You can iterate on transformations before adding them to your table. Use .select() with .collect() to preview results on sample images—nothing is stored in your table. If you want to collect only the first few rows, use .head(n) instead of .collect(). Once you're satisfied, use .add_computed_column() to apply the opacity adjustment to all images in your table.
What it covers
- Set image opacity (transparency level)
- Test transformations before applying
- Apply to multiple images automatically
What it uses
- Install
- terminalpip install pixeltable
- Pixeltable calls
pxt.create_table()@pxt.udfinsert()add_computed_column()
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