| | |
| | | import java.net.FileNameMap; |
| | | import java.net.URLConnection; |
| | | import javax.imageio.ImageIO; |
| | | import javax.imageio.ImageWriter; |
| | | import javax.imageio.ImageWriteParam; |
| | | import javax.imageio.stream.FileImageOutputStream; |
| | | import javax.imageio.IIOImage; |
| | | import java.lang.Integer; |
| | | |
| | | /* |
| | | Skript zum Verkleinern von Bildern mit Hilfe |
| | | der Klasse Bild |
| | | Java-Code zum Verkleinern von Bildern |
| | | |
| | | args[0] - Anzahl Pixel an der laengsten Kante |
| | | args[1] - qualitaet JPEG, z.B. 0.75 fuer 75% des Originals |
| | | args[2] - Eingangsordner |
| | | args[3] - Ausgabeordner |
| | | */ |
| | | |
| | | FileNameMap fileNameMap = URLConnection.getFileNameMap(); |
| | | int width = Integer.parseInt(args[0]); |
| | | int height = width; |
| | | String inDirName = args[1]; |
| | | String outDirName = args[2]; |
| | | String inDirName = args[2]; |
| | | String outDirName = args[3]; |
| | | File inFile = new File(inDirName); |
| | | File[] fileList = inFile.listFiles(); |
| | | if(fileList != null && fileList.length > 0) { |
| | | for(int i = 0; i < fileList.length; i++) { |
| | | System.out.println(fileList[i].getAbsolutePath()); |
| | | |
| | | |
| | | File outDir = new File(outDirName); |
| | | File outFile = new File(outDir, fileList[i].getName()); |
| | | System.out.println(outFile.getAbsolutePath()); |
| | |
| | | try { |
| | | mediaTracker.waitForID(0); |
| | | if (!mediaTracker.isErrorAny()) { |
| | | |
| | | int quality = 90; |
| | | |
| | | float quality = Float.parseFloat(args[1]); |
| | | float factor = (float) 0.0; |
| | | |
| | | |
| | | BufferedImage thumbImage; |
| | | int imageWidth = image.getWidth(null); |
| | | int imageHeight = image.getHeight(null); |
| | | int thumbWidth = width; |
| | | int thumbHeight = height; |
| | | if(imageWidth < width) { |
| | | thumbWidth = imageWidth; |
| | | thumbWidth = imageWidth; |
| | | } |
| | | if(imageHeight < height) { |
| | | thumbHeight = imageHeight; |
| | |
| | | else { |
| | | thumbWidth = (int)(thumbHeight * imageRatio); |
| | | } |
| | | |
| | | String mimeType = fileNameMap.getContentTypeFor("file://" + fileList[i].getAbsolutePath()); |
| | | |
| | | |
| | | String mimeType = fileNameMap.getContentTypeFor("file://" + fileList[i].getAbsolutePath()); |
| | | |
| | | // draw original image to thumbnail image object and |
| | | // scale it to the new size on-the-fly |
| | | if(mimeType.contains("jpeg") || mimeType.contains("png")) { |
| | |
| | | Graphics2D graphics2D = thumbImage.createGraphics(); |
| | | graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); |
| | | graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null); |
| | | |
| | | |
| | | // 30.7.2007: sharpening hinzugefuegt (Anfang) |
| | | //float factor = -0.15f; // minus = sharpen, plus = soften |
| | | //float[] sharpenArray = {0, -1, 0, -1, 5, -1, 0, -1, 0}; |
| | |
| | | /*if(thumbWidth < 400 || thumbHeight < 400) { |
| | | factor = 0.1f; |
| | | }*/ |
| | | |
| | | |
| | | if(factor != (float) 0.0) { |
| | | //float[] array = {0, factor, 0, factor, 1-(factor*4), factor, 0, factor, 0}; |
| | | float[] array = new float[9]; |
| | |
| | | ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null); |
| | | thumbImage = cOp.filter(thumbImage, null); |
| | | } |
| | | // 30.7.2007: sharpening hinzugefuegt (Ende) |
| | | |
| | | // 30.7.2007: sharpening hinzugefuegt (Ende) |
| | | |
| | | String imgType; |
| | | if(mimeType.contains("jpg")) { |
| | | imgType = "jpg"; |
| | |
| | | } else { |
| | | imgType = "jpg"; |
| | | } |
| | | |
| | | ImageIO.write(thumbImage, imgType, outFile); |
| | | |
| | | /* |
| | | 14.1.2018: Ausgabe um Qualitaetsparameter erweitert |
| | | Beginn |
| | | */ |
| | | ImageWriter writer = ImageIO.getImageWritersByFormatName(imgType).next(); |
| | | ImageWriteParam iwp = writer.getDefaultWriteParam(); |
| | | iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); |
| | | iwp.setCompressionQuality(quality); |
| | | writer.setOutput(new FileImageOutputStream(outFile)); |
| | | writer.write(null, new IIOImage(thumbImage, null, null), iwp); |
| | | writer.dispose(); |
| | | /* 14.1.2018 Ende */ |
| | | } |
| | | } catch (InterruptedException ex) { |
| | | System.out.println("Error: " + ex.getLocalizedMessage()); |
| | | } |
| | | |
| | | } |
| | | } |
| | | } else { |
| | | System.out.println("fileList is null or empty"); |
| | | } |
| | | } |