gato

gato

gato is a simple package for image processing operation written in Go

Features

• Supporting JPG/JPEG and PNG for input image
• Resize
  • For resizing, there are three interpolation methods available:
    • Nearest Neighbor
    • Bilinear
    • Bicubic
      • Using Catmull Rom Spline

Usage

Here's a quick example of how to use gato:

package main

import (
	"fmt"
	"image/jpeg"
	"log"
	"os"

	"github.com/obzva/gato-cli/gato"
)

func main() {
  fileName := "path/your-image.jpg"

  // read image
  img, err := os.Open(fileName)
  if err != nil {
	log.Fatal(err)
  }
  defer img.Close()

  // create a new Data struct
  // pass fileName and io.Reader interface
  data, err := gato.NewData(fileName, img)
  if err != nil {
	log.Fatal(err)
  }

  // create a new Processor struct
  // pass your instructions with Instruction struct
  prc, err := gato.NewProcessor(gato.Instruction{
	Width:         1500,
	Interpolation: gato.NearestNeighbor,
  })
  if err != nil {
    log.Fatal(err)
  }

  // process the image
  res, err := prc.Process(data)
  if err != nil {
	log.Fatal(err)
  }

  // ...
}