Question

我正在使用此命令压缩文件夹中的3张图像。

for pos1 in 1*.png; do  for pos3 in 3*.png; do  for pos6 in 6*.png; do convert -gravity center $pos1 $pos3 $pos6 -layers flatten  $pos1$pos3$pos6 ;done  ;done ;done

这是我文件夹的外观：

出于某种原因，imagemagick会忽略1*.png张图片并创建仅$pos3和$pos6的合成。可能是这种行为的原因，我该如何解决？我正在操纵的图像是一些较老的图像魔法处理的产物。

更新：

经过一些更多测试后，看起来错误来自于输入图像是先前转换/复合命令的输出这一事实（无法记住我使用的是哪一个）。不过，我不知道如何解决这个问题。

识别命令输出（无直方图）：

Format: PNG (Portable Network Graphics)
  Mime type: image/png
  Class: DirectClass
  Geometry: 3843x3402+0+0
  Units: Undefined
  Type: TrueColorAlpha
  Endianess: Undefined
  Colorspace: sRGB
  Depth: 8-bit
  Channel depth:
    red: 8-bit
    green: 8-bit
    blue: 8-bit
    alpha: 1-bit
  Channel statistics:
    Pixels: 13073886
    Red:
      min: 0 (0)
      max: 255 (1)
      mean: 246.072 (0.96499)
      standard deviation: 44.204 (0.173349)
      kurtosis: 23.2206
      skewness: -4.96363
      entropy: 0.0669139
    Green:
      min: 0 (0)
      max: 255 (1)
      mean: 246.072 (0.96499)
      standard deviation: 44.2038 (0.173348)
      kurtosis: 23.2205
      skewness: -4.96362
      entropy: 0.0669169
    Blue:
      min: 0 (0)
      max: 255 (1)
      mean: 246.072 (0.96499)
      standard deviation: 44.2038 (0.173348)
      kurtosis: 23.2207
      skewness: -4.96364
      entropy: 0.066917
    Alpha:
      min: 255 (1)
      max: 255 (1)
      mean: 255 (1)
      standard deviation: 0 (0)
      kurtosis: 0
      skewness: 0
      entropy: 0
  Image statistics:
    Overall:
      min: 0 (0)
      max: 255 (1)
      mean: 184.554 (0.723742)
      standard deviation: 38.2817 (0.150124)
      kurtosis: 150.659
      skewness: -25.8099
      entropy: 0.050187
  Rendering intent: Perceptual
  Gamma: 0.45455
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: white
  Border color: srgba(223,223,223,1)
  Matte color: grey74
  Transparent color: none
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 3843x3402+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: Zip
  Orientation: Undefined
  Properties:
    date:create: 2017-04-05T20:18:59+02:00
    date:modify: 2017-04-05T10:36:08+02:00
    png:bKGD: chunk was found (see Background color, above)
    png:cHRM: chunk was found (see Chromaticity, above)
    png:gAMA: gamma=0.45454544 (See Gamma, above)
    png:IHDR.bit-depth-orig: 8
    png:IHDR.bit_depth: 8
    png:IHDR.color-type-orig: 6
    png:IHDR.color_type: 6 (RGBA)
    png:IHDR.interlace_method: 0 (Not interlaced)
    png:IHDR.width,height: 3843, 3402
    png:sRGB: intent=0 (Perceptual Intent)
    png:text: 2 tEXt/zTXt/iTXt chunks were found
    png:tIME: 2017-04-03T18:20:37Z
    signature: ea0ce8b483b92bda18d999d203a5e1329d48fb63059d6702051b74f7930286fc
  Artifacts:
    filename: /Users/mainuser/Desktop/final/HALFS/to/1_1ND1_1.png
    verbose: true
  Tainted: False
  Filesize: 710KB
  Number pixels: 13.07M
  Pixels per second: 54.47MB
  User time: 0.230u
  Elapsed time: 0:01.240
  Version: ImageMagick 6.9.7-3 Q16 x86_64 2017-01-07 http://www.imagemagick.org

Answer 1

更新了答案

由于我们遇到了一些问题并且您无法分享您的图片，请让我们自己制作一些：

convert -size 600x200 xc:none -fill red -draw "circle 100,100 100,200" -bordercolor black -border 1 1.png

convert -size 600x200 xc:none -fill lime -draw "circle 300,100 400,100" -bordercolor black -border 1 2.png

convert -size 600x200 xc:none -fill blue -draw "circle 500,100 600,100" -bordercolor black -border 1 3.png

现在让它们展平到透明背景上：

convert [123].png -background none -flatten result.png

也许您可以创建这些图片并尝试使用您的ImageMagick版本。

原始答案

这取决于您的文件在大小和透明度方面的方式，但请在循环中间尝试：

convert -gravity center "$pos1" "$pos3" -composite "$pos6" -composite "${pos1}${pos3}${pos6}.png"

这假定＆＃34; $ pos1＆＃34;是像素尺寸方面最大的文件。

请注意，在扩展它们时，应始终双引用shell变量，以防文件名恰好包含空格。

图像magick转换忽略了一些图像

1 个答案: