Usage

The tool would produce 64-bit integer as a hash

Usage: ./bin/imgsum-darwin-amd64 [OPTION]... [FILE]...
Print or check image Average hashes
  -concurrency
    Amount of routines to spawn at the same time(8 by default for your system)
  -find-duplicates
    read average hashes from the FILEs and find duplicates
  -json-input
    Read file list from stdin as a JSON({'files':['file1', 'file2']}) and calculate their hash
  -json-output
    Return duplicates as a JSON(useful for IPC)
  -version
    Print imgsum version

Examples:
  ./bin/imgsum-darwin-amd64 file.jpg
  ./bin/imgsum-darwin-amd64 file.jpg | tee /tmp/database.txt
  ./bin/imgsum-darwin-amd64 -check /tmp/database.txt
  ./bin/imgsum-darwin-amd64 -find-duplicates /tmp/database.txt
  cat input.json | ./bin/imgsum-darwin-amd64 -json-input

JSON input

imgsum supports receiving file list to calculate hashes from STDIN which is useful
for IPC. The scheme for the JSON should be the following:

{
  "files": [
    "/Volumes/Disk1/file1.cr2",
    "/Volumes/Disk1/file2.jpg",
    "/Volumes/Disk1/file3.jpg"
  ]
}

Golang model:

type JsonInput struct {
	Files []string `json:"files"`
}

NOTES

Image format supported and tested:

• Adobe Digital Negative(*.dng)
• Canon RAW(*.cr2 - only, *.crw is not supported yet)
• Epson RAW(*.erf)
• Hasselblad 3FR(*.3fr)
• JPEG
• Kodak RAW(*.kdc - verified on Kodak DC50, DC120. Easyshare Z1015 RAW files doesn't work)
• Leaf RAW(*.mos - verified on Aptus 22, Aptus 75 doesn't work)
• Nikon RAW(*.nef - only, *.nrw is not supported yet)
• TIFF

TODO

• Refactor into subpackages and add tests