Question

我正在尝试使用java将两个图像放在一起。所以我尝试在另一个缓冲的图像上绘制一个缓冲的图像，但它破坏了图像的颜色，最终的图像有点绿色这是我的代码：

  try
{
BufferedImage source = ImageIO.read(new File("marker.png"));
BufferedImage logo = ImageIO.read(new File("pic.png"));

Graphics2D g = (Graphics2D) source.getGraphics();
g.drawImage(logo, 20, 50, null);
File outputfile = new File("image.jpg");
ImageIO.write(source, "jpg", outputfile);
}
catch (Exception e)
{
e.printStackTrace();
}

Answer 1

压缩过程中jpg可能会弄乱您的数据 - 您可以尝试使用png作为输出格式。

为了确保您拥有所需的所有颜色，我建议使用您需要的colordepth专用目标图像，而不是覆盖源图像。像这样：

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
    <PackageTargetFallback>$(PackageTargetFallback);portable-net45+win8+wp8+wpa81;</PackageTargetFallback>
    <UserSecretsId>aspnet-MVC_IndvUserAccts_Test-B2520DA6-BE8D-42EE-806D-366F7C4C2E77</UserSecretsId>
  </PropertyGroup>


  <ItemGroup>
    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.0.0" />
    <PackageReference Include="Microsoft.AspNetCore" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.2" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.3" />
    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.2" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.2" PrivateAssets="All" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="1.1.1" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.Design" Version="1.1.2" PrivateAssets="All" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.1.1" PrivateAssets="All" />
    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="1.1.2" />
    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.2" />
    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="1.1.1" PrivateAssets="All" />
    <PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.2" />
  </ItemGroup>

  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.1" />
    <DotNetCliToolReference Include="Microsoft.Extensions.SecretManager.Tools" Version="1.0.1" />
    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="1.0.1" />
  </ItemGroup>

</Project>

在另一个上绘制缓冲图像？

1 个答案: