我試圖使用J / Link從Mathematica獲取圖像到

Java.我可以在Mathematica中打印圖像,如下所示：

Print[ Graphics[Raster[ img[[1]] ], AspectRatio->Automatic, ImageSize->530 ] ];

我試過以各種方式從Mathematica函數(shù)返回數(shù)據(jù)：

Return [ Image[Graphics[Raster[ img[[1]] ], AspectRatio->Automatic, ImageSize->530 ]] ];

Return [ Graphics[Raster[ img[[1]] ], AspectRatio->Automatic, ImageSize->530 ] ];

Return [ Raster[ note1[[1]] ] ];

Return [ note1[[1]] ];

我的Java代碼：

ml.evaluate("tmp = renderImageGeneric[" + sampleId + ", noteText," + sizeX + "," + sizeY + ", margin," + dpi + "," + lineStep + "," + tabStep + "," + ligatureMatch + "," + maxLigHeightDiff + "," + mmSearch + "," + highToLowGap + "," + lowToHighGap + "," + wordBaselineVariance + "," + debugFlag + "]");

ml.discardAnswer();

byte[] res = ml.evaluateToImage("tmp", 0, 0);

ByteArrayInputStream strm = new ByteArrayInputStream(res);

BufferedImage imag = ImageIO.read(strm);

//BufferedImage imag = ImageIO.read(new InputStream(res));

if(imag != null) {

ImageIO.write(imag, "png", new File("/Users/Rebecca/","test.png"));

}else {

System.out.println("image is null");

}

調(diào)試時,我在res中得到一個大字節(jié)數(shù)組.圖像確實被保存,但它是空白的(即白色圖像).

如果我只返回一個字符串(“藍色”),則會保存帶有藍色字符串的圖像.

我假設(shè)我需要在renderImageGeneric中返回不同的東西,但我無法弄清楚是什么.

謝謝！

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