flashercs

用powershell找色也行吧.设 RGB中至少两个原色不同的点为彩色点,当图片底部的1/3区域中的彩色点数量达到10%时 ,该图片被认为是彩图.
下面代码并未真正重命名图片,只是找出符合条件的图片; 保存为 "彩图".bat,设置变量PicturePath为要处理的图片或所在目录的路径列表,以空格分隔开

@echo off
set PicturePath="E:\test\dir1" "E:\test\dir2" "E:\test\dir3" "E:\test\dir4\00053.jpg"
for /f "tokens=1 delims=:" %%A in ('findstr /n "#######*" %0') do more +%%A %0 >"%~dpn0.ps1"
powershell.exe -ExecutionPolicy Bypass -File "%~dpn0.ps1" %PicturePath%
pause
exit /b
################################################################
[boolean]$isRecursive = $false # 是否处理子目录
function testColor {
  param (
    [string]$filepath
  )
  $bitmap = New-Object -TypeName System.Drawing.Bitmap -ArgumentList $filepath
  # $bitmap = [System.Drawing.Bitmap]::new($filepath)
  $height = $bitmap.Height
  $width = $bitmap.Width
  # 彩色点数目下限设置为图片底部1/3的点数的10%
  $minPoints = [System.Math]::Floor(0.1 * $width * $height / 3)
  $count = 0
  $flag = $false
  :outer
  for ($y = [System.Math]::Ceiling($height * 2 / 3) - 1; $y -lt $height; $y++) {
    for ($x = 0; $x -lt $width; $x++) {
      $color = $bitmap.GetPixel($x, $y)
      if (!($color.R -eq $color.G -and $color.R -eq $color.B)) {
        if (++$count -ge $minPoints) {
          $flag = $true
          break outer
        }
      }
    }
  }
  # Write-Host "`$y = $y;`$x = $x" -ForegroundColor Magenta
  $bitmap.Dispose()
  return $flag
}
function genFile {
  param (
    [string]$filepath
  )
  Write-Host $filepath -ForegroundColor Green
  if (testColor $filepath) {
    Rename-Item -LiteralPath $filepath -NewName ([System.IO.Path]::GetFileNameWithoutExtension($filepath) + 'C' + [System.IO.Path]::GetExtension($filepath)) -WhatIf
  }
}
function genFolder {
  param (
    [string]$folderPath,
    [switch]$recurse
  )
  if ($recurse) {
    Get-ChildItem -LiteralPath $folderPath -Filter '*.jpg' -File -Recurse|ForEach-Object {genFile $_.FullName}
  }
  else {
    Get-ChildItem -LiteralPath $folderPath -Filter '*.jpg' -File|ForEach-Object {genFile $_.FullName}
  }
}
Add-Type -AssemblyName System.Drawing|Out-Null
Write-Host "`$args.Count=$($args.Count)"
foreach ($item in $args) {
  if ((Get-Item -LiteralPath $item).Attributes -band [System.IO.FileAttributes]::Directory) {
    genFolder $item $isRecursive
  }
  else {
    genFile $item
  }
}
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