imageslicer

imgUrl := "https://static.wikia.nocookie.net/big-hero-6-fanon/images/0/0f/Hiro.jpg/revision/latest?cb=20180511180437"

img := imageslicer.GetImageFromUrl(imgUrl)

if img == nil {
log.Fatalln("invalid image url or image format not supported!")
}

grid := [2]uint{2, 2} //rows,columns

tiles := imageslicer.Slice(img, grid)

expectedTiles := int(grid[0] * grid[1])

if len(tiles) != expectedTiles {
log.Fatalf("expected %d rcvd %d\n", expectedTiles, len(tiles))
}

Join the tiles back

//lets join the tiles back

joinedImg, err := imageslicer.Join(tiles, grid)

if err != nil {
log.Fatalf("joining tiles failed due to %s", err)
}

shapeJ := joinedImg.Bounds()
shapeI := img.Bounds()

fmt.Println(shapeJ, shapeI) //shape might change due to pixel loss
}

//From base64

base64str := "" //very long.

img, err := imageslicer.GetImageFromBase64(base64str)


//From urls

imgUrl := "https://static.wikia.nocookie.net/big-hero-6-fanon/images/0/0f/Hiro.jpg/revision/latest?cb=20180511180437"

img := imageslicer.GetImageFromUrl(imgUrl)

Important Notes/Caveats/Pitfalls

• Use the latest release.
• Slice(img,grid)
  • ensure grid[0]*grid[1]>0.
  • ensure img is not nil.
  • its best if the img is downsized to the area of grid to avoid pixel losses. //Will bring support in future releases
• Join(tiles,grid)
  • ensure that the grid is the same grid used originally for slicing.
  • the grid is utilized to figure out positions of tiles & the dimensions of the final image.
  • For best results, ensure the tiles were generated by image-slicer.
• GetImageFromBase64(base64str)
  • Supports the image tag format i.e "data:image/jpeg;base64,/" as well
  • Supports jpeg,png only
  • Does not support svg, or any other formats
• GetImageFromUrl(imgUrl)
  • Expects jpeg,png formats only

Contribution

• You can submit an issue or create a Pull Request (PR)