Choosing the correct interpolation method can help to avoid unwanted pixelation:Īutomatic: Photoshop chooses the resampling method based on the image type.

The interpolation method is how Photoshop chooses the colour values of new pixels. Resampling of any kind, especially upsampling, can result in poorer image quality. Removing data is preferable to adding it, since Photoshop will have to guess at how any newly added pixels should look.Ĭhoosing the best interpolation method when upsampling.

When you increase the number of pixels in an image without adjusting the dimensions, you are adding more pixels into the same amount of space and increasing the resolution (or amount of detail) held within each inch. Increasing the number of pixels is called upsampling, which adds data to the image. Decreasing the number of pixels is called downsampling, which removes data from your image. The more pixels an image starts with, the higher the resolution. Resolution is measured in pixels-per-inch or PPI. Resampling images in Photoshop means changing their resolutions by adding or subtracting pixels. How resampling and interpolation affect resolution. However, there are some measures you can take in Adobe Photoshop to help you increase resolution while upholding visual quality. You can increase the resolution of a digital image file, but you will lose image quality by doing so. The only way to resize a smaller photo into a larger, high-resolution image without highlighting poor image quality is to take a new photograph or re-scan your image at a higher resolution. Does this work? Not the way Hollywood does it. It’s a familiar scene: a detective asks someone to “enhance” a blurry image on a computer until it becomes clear enough to make out a key piece of evidence. Can you enhance the quality of a low-resolution image?

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