Adobe InDesign CS5/Script：我可以将TIFF和PNG图像转换为“黑白”吗？

我有一个脚本，可以扫描文档中的所有图像类型，将它们全部转换为黑白图像，然后将黑白图像导出到新文件夹。

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InDesign似乎将导出这些图像文件格式：

JPEG、TIFF和PNG

（它不导出GIF文件）。

但是，InDesign似乎没有TIFF和PNG文件的

ColorSpace.GRAY

或

ColorSpace enum.GRAY

属性（但它对JPEG文件有此属性）。

---

• 那么，有没有办法将TIFF和PNG文件转换为黑白文件 在InDesign的Extendscript中

• 如果有不，不提供的理由是什么 这些文件类型的黑白转换

---

这是我的代码，到目前为止只导出黑白JPEG文件：

var document=app.activeDocument；
var newFolder=createFolder（文档）；//如果是子目录DNE，请使用下面的函数创建此文件夹
保存图像（文档，新文件夹）；//使用下面的函数
函数createFolder（doc）
{
尝试
{
/*
*类型将filePath属性（对象类型）强制转换为字符串类型；
*必须是字符串类型才能与子目录变量连接（也是字符串类型）
*/
var docPath=String（doc.filePath）；
var子目录=“/BLACK AND WHITE IMAGES”；
}
捕获（e）
{
警报（e.message）；
退出（）；
}
var imagesFolder=docPath+子目录；//连接两个变量
如果（！文件夹（imagesFolder）.exists）
{
文件夹（imagesFolder.create（）；
}
返回imagesFolder；//用于此函数外部的实例化
}//函数createFolder结束
函数SaveAllImage（文档、文件夹）
{
var imgs=doc.allGraphics；
var fileName=“”；
var img=“”；
var imgType=“”；
对于（变量i=0；i

那么，有没有一种方法可以将TIFF和PNG文件转换为黑白格式 InDesign的Extendscript

我不知道

如果没有，那么不为这些文件类型提供黑白转换的原因是什么

他只有上帝知道：D

鉴于您的期望，我宁愿将这些图像操作委托给Photoshop，在那里您可以使用任何格式，任何设置。您可以使用BridgeTalk对象，也可以使用运行Ps（applescript for ex）的hotfolder。 或者，根据您的操作系统，您可以使用doScript调用applescript或visualbasic，并让它们运行您可能有的转换工具

祝你好运

卢瓦克

PS：请参阅此工具。也许它有一些可以用JS调用的API

---

因此，尽管我一直在开发一个使用

BridgeTalk

的代码版本，但我最近发现，应用于JPEG的任何格式都可以应用于.BMP、.TIF、.EPS和.PNG，方法是在以后通过编程将文件扩展名重命名为所需格式。

但是，.PDF的无法强制转换为不同的文件格式，因为它们的格式不正确且已损坏

var document = app.activeDocument;
var newFolder = createFolder(document); // if subdirectory DNE, create this folder with the function below

saveAllImages(document, newFolder); // with the function below



function createFolder(doc)
{
    try
    {
      /*
         * type-casting the filePath property (of type object) into a String type;
         * must be a String type to concatenate with the subdirectory variable (also of type String)
         */
        var docPath = String(doc.filePath);
        var subdirectory = "/BLACK AND WHITE IMAGES";
    }
    catch(e)
    {
        alert(e.message);
        exit();
    }

    var imagesFolder = docPath + subdirectory; // concatenating the two variables
    if(!Folder(imagesFolder).exists)
    {
        Folder(imagesFolder).create();
    }

    return imagesFolder; // for instantiation outside of this function

} // end of function createFolder



function saveAllImages(doc, folder)
{
    var imgs = doc.allGraphics;
    var fileName = "";
    var img = "";
    var imgType = "";

    for(var i = 0; i < imgs.length; i++)
    {
        if(imgs[i].itemLink != null)
        {
            fileName = imgs[i].itemLink.name;
            img = new File(folder + "/" + fileName); // each image instantiated here
            imgType = imgs[i].imageTypeName; // image type is determined here (.tif, .jpg, .png, etc..)

            alert("This is a " + imgType + " file.");

            /*
                * array for image options, instantiated from the function below;
                * options[0] is the "MAXIMUM" image quality property, &
                * options[1] is the "GRAY" image conversion property;
                */
            var options = convertToBlackAndWhite(imgType);

            // each image exported to the new folder here, by file type
            switch(imgType)
            {
                case "GIF":
                    alert("This script cannot convert and export the GIF file:\n\t" + fileName + " !");
                    break;

                case "TIFF":

            case "EPS":

                case "JPG":
                    options[0]; // maximum image quality
                    options[1]; // black & white conversion

                    imgs[i].exportFile(ExportFormat.JPG, img, false);
                    break;

                case "PNG":
                    options[0]; // maximum image quality
                    options[1]; // black & white conversion

                    imgs[i].exportFile(ExportFormat.PNG_TYPE, img, false);
                    break;

                default:
                    alert("\tUnlisted image type: " + imgType + "!\nAdd this type to the switch statement.");
                    break;
            } // end of switch statement

        } // end of if statement
    } // end of for loop

} // end of function saveAllImages



        function convertToBlackAndWhite(fileType)
        {
            // array for image-quality and color-conversion values
            var settings = [];

            // each image exported to the new folder here, by file type
            switch(fileType)
            {
                case "TIFF":

                case "PNG":

            case "EPS":

                case "JPG":
                    settings[0] = "app.jpegExportPreferences.jpegQuality = JPEGOptionsQuality.MAXIMUM"; // maximum image quality
                    settings[1] = "app.jpegExportPreferences.jpegColorSpace = JpegColorSpaceEnum.GRAY"; // black & white conversion
                    break;

                default:
                    break;

            } // end of switch statement

            return settings; // for instantiation outside of this function

        } // end of function convertToBlackAndWhite

var document = app.activeDocument;
var newFolder = createFolder(document); // if subdirectory images DNE, create this folder with the function below

saveAllImages(document, newFolder); // with the function below

//---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

function createFolder(doc)
{
    try
    {
      /*
         * type-casting the filePath property (of type object) into a String type;
         * must be a String type to concatenate with the subdirectory variable (also of type String)
         */
        var docPath = String(doc.filePath);
        var subdirectory = "/BLACK AND WHITE IMAGES";
    }
    catch(e)
    {
        alert(e.message);
        exit();
    }

    var imagesFolder = docPath + subdirectory; // concatenating the two variables
    if(!Folder(imagesFolder).exists)
    {
        Folder(imagesFolder).create();
    }

    return imagesFolder; // for instantiation outside of this function

} // end of function createFolder

//---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

function saveAllImages(doc, folder)
{
    var imgs = doc.allGraphics;
    var fileName = "";
    var img = "";
    var imgType = "";

    for(var i = 0; i < imgs.length; i++)
    {
        if(imgs[i].itemLink != null)
        {
            fileName = imgs[i].itemLink.name;
            var str = fileName.substr(0, fileName.length - 4) + ".tif"; // converting all file types to .TIF
            img = new File(folder + "/" + str); // each image instantiated here
            imgType = imgs[i].imageTypeName; // image type is determined here (.tif, .jpg, .png, etc..)

            //alert("The file \"" + fileName + "\"\n\tis a " + imgType + " file.");

            /*
                * array for image options, instantiated from the function below;
                * options[0] is the "MAXIMUM" image quality property, &
                * options[1] is the "GRAY" image conversion property;
                */
            var options = convertToBlackAndWhite(imgType);

            // each image exported to the new folder here, by file type
            switch(imgType)
            {
                case "GIF":
                    alert("This script cannot convert and export the GIF file:\n\t" + fileName + " !");
                    break;

                case "Adobe PDF":
                    // PDF file type does not have the maximum image quality property
                    options[1]; // black & white conversion

                    imgs[i].exportFile(ExportFormat.PDF_TYPE, img, false);
                    break;

                case "EPS":
                    // PDF file type does not have the maximum image quality property
                    options[1]; // black & white conversion

                    imgs[i].exportFile(ExportFormat.EPS_TYPE, img, false);
                    break;

                case "Windows Bitmap":
                case "PNG":
                case "TIFF":
                case "JPEG":
                    options[0]; // maximum image quality
                    options[1]; // black & white conversion

                    imgs[i].exportFile(ExportFormat.JPG, img, false);
                    break;

                default:
                    alert("\tUnlisted image type: " + imgType + "!\nAdd this type to the switch statement.");
                    break;
            } // end of switch statement

            replaceWithNewImage(doc, fileName, img); // with the function below

        } // end of if statement
    } // end of for loop

} // end of function saveAllImages

//---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

        function convertToBlackAndWhite(fileType)
        {
            // array for image-quality and color-conversion values
            var settings = [];

            // each image exported to the new folder here, by file type
            switch(fileType)
            {
                case "Adobe PDF":
                    settings[0] = ""; // PDF file type does not have the maximum image quality property
                    settings[1] = "app.pdfExportPreferences.pdfColorSpace = PDFColorSpace.GRAY"; // black & white conversion
                    break;

                case "EPS":
                    settings[0] = ""; // EPS file type does not have the maximum image quality property
                    settings[1] = "app.epsExportPreferences.epsColorSpace = EPSColorSpace.GRAY"; // black & white conversion
                    break;

                case "Windows Bitmap":
                case "PNG":
                case "TIFF":
                case "JPEG":
                    settings[0] = "app.jpegExportPreferences.jpegQuality = JPEGOptionsQuality.MAXIMUM"; // maximum image quality
                    settings[1] = "app.jpegExportPreferences.jpegColorSpace = JpegColorSpaceEnum.GRAY"; // black & white conversion
                    break;

                default:
                    break;
            } // end of switch statement

            return settings; // for instantiation outside of this function

        } // end of function convertToBlackAndWhite