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jst 378e366327 Replicate border instead of using a constant
Constant border could lead to wrong values alpha values with certain
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2012-12-10 19:27:21 +01:00
converter.go Replicate border instead of using a constant 2012-12-10 19:27:21 +01:00
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LICENSE Documentation updated 2012-08-03 17:39:38 +02:00
README.md Speed up computation: Try to avoid Image.At() as much as possible -> specialized color access for some image types 2012-09-21 20:02:25 +02:00
resize_test.go Speed up computation: Try to avoid Image.At() as much as possible -> specialized color access for some image types 2012-09-21 20:02:25 +02:00
resize.go Include kernel boundary check 2012-12-10 18:56:53 +01:00
sinc_test.go initial commit 2012-08-02 21:59:40 +02:00
sinc.go initial commit 2012-08-02 21:59:40 +02:00

Resize

Image resizing for the Go programming language that includes a few interpolation methods.

Installation

$ go get github.com/nfnt/resize

It's that easy!

Usage

Import package with

import "github.com/nfnt/resize"

Resize creates a scaled image with new dimensions (width, height) using the interpolation function interp. If either width or height is set to 0, it will be set to an aspect ratio preserving value.

resize.Resize(width, height uint, img image.Image, interp resize.InterpolationFunction) image.Image 

The provided interpolation functions are

Sample usage:

package main

import (
	"github.com/nfnt/resize"
	"image/jpeg"
	"log"
	"os"
)

func main() {
	// open "test.jpg"
	file, err := os.Open("test.jpg")
	if err != nil {
		log.Fatal(err)
	}

	// decode jpeg into image.Image
	img, err := jpeg.Decode(file)
	if err != nil {
		log.Fatal(err)
	}
	file.Close()

	// resize to width 1000 using Lanczos resampling
	// and preserve aspect ratio
	m := resize.Resize(1000, 0, img, resize.Lanczos3)

	out, err := os.Create("test_resized.jpg")
	if err != nil {
		log.Fatal(err)
	}
	defer out.Close()

	// write new image to file
	jpeg.Encode(out, m, nil)
}

License

Copyright (c) 2012 Jan Schlicht janschlicht@gmail.com Resize is released under an MIT style license.