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• Ai Photo Enlarger

A Sharper Scaling is a high quality image scaling technology mainly developed for upscaling.
An implementation for Microsoft Windows is available as freeware from this site.

Examples

The following examples are most clear if the images are viewed in their original resolution. Otherwise, the browser does another image scaling on top, somewhat obfuscating the differences these examples are about.

It's usually easy to get the original resolution shown. Turn isight into security camera. On a Windows PC or Notebook, just hold down the Ctrl key and spin the mouse wheel up or down until the left side pattern of this test stripe looks exactly like a miniature version of the right side pattern (chessboard-like).

For comparison, all examples show the results of two conventional methods as well. Bicubic interpolation is what most image editors offer as the most appropriate method for image scaling. The interpolation results are a bit blurry, so another conventional action might be to sharpen them. (The sharpening method used for the examples is 'unsharp masking'.)

The 3rd alternative shown is a scaling method Adobe introduced in 2013 with Photoshop CC, called 'Preserve Details'. (I suppose it's also based on bicubic interpolation internally, but I may be wrong.) The function has a single adjustment 'Reduce Noise' which was set to zero for the test because the pictures have very little noise only.

Example pictures to scale:

Digital Zoom

Small versions of whole pictures are probably not the most typical use case for image upscaling. Ideally, upscaling is the first geometric transformation, which means that the input still has the resolution of the camera. The next examples are details of pictures coming directly from the cam:

(These are critical details not random. Many other details don't show much difference between A.S.S. and a sharpened interpolation.)

Apart From Scaling

Although A Sharper Scaling does nothing but scaling images, it can also contribute to the quality of other geometric transformations like rotation, perspective correction, or lens distortion correction. Just upscale the image by a factor of x before the transformation and downscale it back by x after that. Whether this has a benefit or not depends on the image editor used and the type of transformation. (In the example, x was chosen to be 2. The image editor used was Adobe Photoshop CC 2015.)

For comparison, all examples show the results of two conventional methods as well. Bicubic interpolation is what most image editors offer as the most appropriate method for image scaling. The interpolation results are a bit blurry, so another conventional action might be to sharpen them. (The sharpening method used for the examples is 'unsharp masking'.)

The 3rd alternative shown is a scaling method Adobe introduced in 2013 with Photoshop CC, called 'Preserve Details'. (I suppose it's also based on bicubic interpolation internally, but I may be wrong.) The function has a single adjustment 'Reduce Noise' which was set to zero for the test because the pictures have very little noise only.

Example pictures to scale:

Digital Zoom

Small versions of whole pictures are probably not the most typical use case for image upscaling. Ideally, upscaling is the first geometric transformation, which means that the input still has the resolution of the camera. The next examples are details of pictures coming directly from the cam:

(These are critical details not random. Many other details don't show much difference between A.S.S. and a sharpened interpolation.)

Apart From Scaling

Although A Sharper Scaling does nothing but scaling images, it can also contribute to the quality of other geometric transformations like rotation, perspective correction, or lens distortion correction. Just upscale the image by a factor of x before the transformation and downscale it back by x after that. Whether this has a benefit or not depends on the image editor used and the type of transformation. (In the example, x was chosen to be 2. The image editor used was Adobe Photoshop CC 2015.)

Software

Alternatively available: Mobile (zipped) version, no installation required Goodtask 4 9 5 esv. Mac dvdripper pro 5 0 7 download free.

Version history:

FAQ

• When I try to run the installer, there's a malware alert from my security software or operating system. What does that mean? ››› Yes, that's because it's an obscure binary downloaded from the Internet. From the security point of view, such file is dangerous. You have to decide whether you trust me or not.
• What further development is planned? ››› Quality improvement: maybe. Speed improvement: unlikely. Support for 16 bits per channel: unlikely. A 64 bit version: unlikely. A MacOS version: out of reach. This is not a professional software. It's not based on the right technologies for performing fast, handling large data, supporting multiple platforms. I have to compromise, it's just a spare time project.

Hq Photo Enlarger 1 680

Developer

Ai Photo Enlarger

Legal Disclosure

See: legal disclosure.