Dispel Misunderstandings when using Reshade Image Enlarger
There are a few situations when resizing images on reshade.com won’t give the expected results. Here’s why:
Compression artifacts
First, very small images are also highly compressed (jpeg for example). The compression leaves artifacts in the image. They appear like out of place rectangles mostly around edges. These are mostly poorly visible in a small image. They can be taken as background noise or possibly even over-sharpening side-effects. When enlarged they become a lot more apparent. Reshading reduces their influence most of the time. But, there are of course plenty of very strongly compressed images out there. This implies lots of artifacts. If also using strong sharpening when reshading they become more apparent than usual.
Noise-like details
Small images are usually created from some larger versions of photos or other works. By shrinking an image more detail is gathered in a tighter space. This means that many noise-like effects will be created. Reshade tries to make sense of edges only above a threshold, considering the rest as noise. And noise is not a good thing, so reshading removes it. Because of this, enlarging very small images sometimes doesn’t work perfectly.
Sub-optimal sharper value
In most situations, a value of 100(%) for the sharper setting when resizing will be the best choice. Some images may require less of more depending on the situation. Try not to use too large a value. Sometimes this will create very unpleasant effects. If this happens reduce the sharper value or un-check the corresponding box (this will set sharpening to 0%)
Big blurry originals
Reshading will work only for up-sizing images. When down-sizing another method is used. This will not de-blur the image as it is currently implemented. If you would like reshade.com to use deblurring on the original please tell me.
Upsize limits
Reshade.com allows only resizes up to approximately a maximum of 1920×1200 pixels. But, because cropping is enabled the actual zoom factor spans from 0% to 300%. There is a limit to the number of crops/day (about 50).
