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aspeq

aspeq finds the closest "standard" aspect ratio from an image file, or from relative or absolute dimensions (width and height)

defined ratios

• tiktok (9:16)
• instax (3:4)
• square (1:1)
• movietone (1.19:1)
• four-thirds (4:3)
• academy (1.375:1)
• leica (3:2)
• super16 (5:3)
• sixteen-nine (16:9)
• flat (1.85:1)
• univisium (2:1)
• cinemascope (2.35:1)
• cinerama (2.59:1)
• widelux (3:1)
• polyvision (4:1)
• circle-vision (12:1)

command line

$ aspeq *.jpeg
1.66.jpeg: super16
1.77.jpeg: sixteen-nine
2.35.jpeg: cinemascope

$ aspeq -x 1.66.jpeg
1.66.jpeg: 5:3

go

package main

import (
  "fmt"
  "blekksprut.net/aspeq"
)

func main() {
  ratio := aspeq.Match(320, 240)
  fmt.Println(ratio.Xy()) // prints "4:3"

  ar, err := aspeq.FromImage("1.66.jpeg") // a 40:24 image
  if err != nil {
    panic(err)
  }
  fmt.Println(ar.Name) // prints "super16"
}