if a image just have a color, "getPalette" methods is throw error

[AursorDev]

Hello
When I use it to get color,i upload this image,but it is throw error
white image

and the code is:

app.post("/colors", upload.single("file"), async (req, res) => {
  const fileExt =
    req.file.originalname.split(".")[
      req.file.originalname.split(".").length - 1
    ];
  try {
    fs.renameSync(
      path.resolve(__dirname, req.file.path),
      `${req.file.path}.${fileExt}`
    );

    const color = await ColorThief.getPalette(
      path.resolve(__dirname, `${req.file.path}.${fileExt}`),
      2,
      500
    );

    res.status(200).send(color);
  } catch (e) {
    console.log("e:", e);
    res.status(500).send("图片处理失败!");
  }
});

[john-doherty]

Why was this closed without a solution/fix?

[drzoidberg33]

I ran into this yesterday too.

It's because color-thief will fail on any image that only has white/near-white pixels:

color-thief/src/core.js

Lines 12 to 17 in 4dc3bb0

	// If pixel is mostly opaque and not white
	if (typeof a === 'undefined' || a >= 125) {
	if (!(r > 250 && g > 250 && b > 250)) {
	pixelArray.push([r, g, b]);
	}
	}

[AursorDev]

wow，you responsed me! ok, i see this，but i don't know why can't support the image in pure color

…

________________________________ 发件人: Tim Van ***@***.***> 发送时间: 2024年4月17日 16:19 收件人: lokesh/color-thief ***@***.***> 抄送: 浮云 ***@***.***>; Author ***@***.***> 主题: Re: [lokesh/color-thief] if a image just have a color, "getPalette" methods is throw error (Issue #242) I ran into this yesterday too. It's because color-thief will fail on any image that only has white/near-white pixels: https://github.com/lokesh/color-thief/blob/4dc3bb0b43250f0d006278998aa91c4156f77cc3/src/core.js#L12-L17 ― Reply to this email directly, view it on GitHub<#242 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AXGW4TCLLYGQUNREP7YRUILY5YV7LAVCNFSM6AAAAAAZLRXDD2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDANRQGY3TONRXGA>. You are receiving this because you authored the thread.Message ID: ***@***.***>