jimp-dev/jimp

CMYK Source Saved as RGB

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Aperta il 22 lug 2021

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 (0 commenti) (0 reazioni) (0 assegnatari)JavaScript (13.218 star) (785 fork)batch import
enhancementhelp wanted

Descrizione

Expected Behavior

maintain color mode on save

Current Behavior

CMYK TIFF saved as JPG is RGB

Failure Information (for bugs)

A CMYK TIFF file read then saved as JPG is saved in RGB.

I have read a number of conflicting statements regarding the support for CMYK - one stated that jpeg-js does not support CMYK, which seems untrue (at least currently) - so how does jimp specify which mode for jpeg-js to save in?

Guida contributor

Tech stack
javascriptnodejs
Dominio
backend
Tipo issue
bug
DifficoltàQuanto dovrebbe essere impegnativa per un nuovo contributor.
3
Tempo stimatoTempo stimato per completare e verificare uno scope piccolo.
half day
Stato attivitàQuanto è probabile che la issue sia ancora attiva e reviewable.
stale
ChiarezzaQuanto chiaramente la issue descrive problema, scope e risultato atteso.
clear
Prerequisiti
Basic JavaScriptFamiliarity with image color spaces
Adatta ai principiantiQuanto la issue è adatta a contributor alla prima esperienza.
50
Direzione di ricerca
Investigate how Jimp handles color mode during save, specifically for JPEG output. Review the write method and how it interacts with jpeg js. Check if jpeg js supports CMYK and if Jimp explicitly sets the color mode. Look at the image object's mode property and how it's passed to the encoder. Consider adding a test case for CMYK TIFF to JPEG conversion.