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Nintendo® Confidential

## imscale

Syntax

    imscale -i input.rgb -o output.rgb -x xscale -y yscale

Explanation
It is an image scaling utility that reads in an rgb format image and scales it by arbitrary X and Y floating point scaling values to stretch or shrink the image to a desired size. This utility is useful for constructing properly filtered textures used in MIP mapping.
Command Line Options

- -i input.rgb Specifies the name of the input image file that is to be manipulated.
- -o output.rgb Specifies the name of the resulting output image file.
- -x xscale Specifies the floating point scaling factor to be applied to the image's X dimension. A value of 1.0 will leave the image unchanged in the X dimension.
- -y yscale Specifies the floating point scaling factor to be applied to the image's Y dimension. A value of 1.0 will leave the image unchanged in the Y dimension.

Note
The filter kernel used is a windowed Lanczos kernel, which gives a reasonable approximation to the ideal sinc kernel.

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Copyright © 1998
Nintendo of America Inc. All rights reserved
Nintendo and N64 are registered trademarks of Nintendo
Last updated March 1998