jimp-dev/jimp

Dither not working

Open

Aperta il 7 apr 2021

Vedi su GitHub
 (1 commento) (1 reazione) (0 assegnatari)JavaScript (13.218 star) (785 fork)batch import
bughelp wanted

Descrizione

Expected Behavior

this image example to something like this dithered_image

Current Behavior

this image example to this image dithered_image there is just nothing happening

Failure Information (for bugs)

the image is not being dithered

Steps to Reproduce

my code snippet:


Jimp.read('./server/images/example.png', async function (err, image) {
            
            async function dithering() {
                console.log('dithering', file)

                image.dither565()
                image.write(`./server/images/dithered_image.png`)


                file = `./server/images/dithered_image.png`
            } 
     //...
     //...
  1. step 1: dither the image
  2. step 2: see the result

Context

  • Jimp Version: 0.16.1
  • Operating System: Windows 10 64 bit
  • Node version: v14.16.0

Failure Logs

no errors / logs

Guida contributor

Tech stack
javascript
Dominio
backend
Tipo issue
bug
DifficoltàQuanto dovrebbe essere impegnativa per un nuovo contributor.
3
Tempo stimatoTempo stimato per completare e verificare uno scope piccolo.
1-3 hours
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
JavaScriptNode.jsJimp basics
Adatta ai principiantiQuanto la issue è adatta a contributor alla prima esperienza.
70
Direzione di ricerca
Investigate the implementation of the `dither565` method in Jimp. Check the source code for the dithering algorithm, likely in `packages/core/src/` or similar. Look for any changes in behavior between versions, especially since the user reports no errors nor logs. Consider adding debug logging to trace the pixel manipulation. Check if there are any existing test cases for dithering that might indicate the expected behavior.