{"id":15819,"date":"2022-10-13T04:36:46","date_gmt":"2022-10-12T23:06:46","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-need-java-function-that-takes-image-and-imagesizein-kb-as-input-and-return-an-image-closed\/"},"modified":"2022-10-13T04:36:46","modified_gmt":"2022-10-12T23:06:46","slug":"solved-need-java-function-that-takes-image-and-imagesizein-kb-as-input-and-return-an-image-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-need-java-function-that-takes-image-and-imagesizein-kb-as-input-and-return-an-image-closed\/","title":{"rendered":"[Solved] Need Java function that takes image and imagesize(in Kb) as input and return an image [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-25608771\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"25608771\" data-parentid=\"25608484\" data-score=\"3\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Keep adjusting the compression in this example until the image size in bytes is below the limit.<\/p>\n<h2>Screen shot<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/jassweb.com\/solved\/wp-content\/uploads\/2022\/10\/Solved-Need-Java-function-that-takes-image-and-imagesizein-Kb.png\" width=\"639\" height=\"475\"><\/p>\n<h2>Typical outputs<\/h2>\n<pre><code>Fractional Metrics:     true\nNonantialiased text mode\nPNG size:   7390 bytes\nJPG size:   7036 bytes  quality: 35\n\nFractional Metrics:     true\nAntialiased text mode\nPNG size:   8741 bytes\nJPG size:   8663 bytes  quality: 55\n\nFractional Metrics:     false\nAntialiased text mode\nPNG size:   8720 bytes\nJPG size:   8717 bytes  quality: 55\n<\/code><\/pre>\n<h2>Source<\/h2>\n<pre><code>import java.awt.image.BufferedImage;\nimport java.awt.*;\nimport java.awt.event.*;\nimport javax.swing.*;\nimport javax.swing.event.*;\nimport javax.imageio.*;\nimport java.io.*;\nimport javax.imageio.stream.ImageOutputStream;\nimport javax.imageio.plugins.jpeg.JPEGImageWriteParam;\nimport java.util.Locale;\n\nclass ImageCompressionDemo {\n\n    private BufferedImage originalImage;\n    private BufferedImage textImage;\n\n    private JPanel gui;\n\n    private JCheckBox antialiasing;\n    private JCheckBox rendering;\n    private JCheckBox fractionalMetrics;\n    private JCheckBox strokeControl;\n    private JCheckBox colorRendering;\n    private JCheckBox dithering;\n\n    private JComboBox textAntialiasing;\n    private JComboBox textLcdContrast;\n\n    private JLabel jpegLabel;\n    private JLabel pngLabel;\n\n    private JTextArea output;\n\n    private JSlider quality;\n\n    private int pngSize;\n    private int jpgSize;\n\n    final static Object[] VALUES_TEXT_ANTIALIASING = {\n        RenderingHints.VALUE_TEXT_ANTIALIAS_OFF,\n        RenderingHints.VALUE_TEXT_ANTIALIAS_ON,\n        RenderingHints.VALUE_TEXT_ANTIALIAS_GASP,\n        RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HBGR,\n        RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB,\n        RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VBGR,\n        RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VRGB\n    };\n\n    final static Object[] VALUES_TEXT_LCD_CONTRAST = {\n        new Integer(100),\n        new Integer(150),\n        new Integer(200),\n        new Integer(250)\n    };\n\n    ImageCompressionDemo() {\n        int width = 280;\n        int height = 100;\n\n        gui = new JPanel(new BorderLayout(3,4));\n\n        quality = new JSlider(JSlider.VERTICAL, 0, 100, 75);\n        quality.setSnapToTicks(true);\n        quality.setPaintTicks(true);\n        quality.setPaintLabels(true);\n        quality.setMajorTickSpacing(10);\n        quality.setMinorTickSpacing(5);\n        quality.addChangeListener( new ChangeListener(){\n            public void stateChanged(ChangeEvent ce) {\n                updateImages();\n            }\n        } );\n        gui.add(quality, BorderLayout.WEST);\n\n        originalImage = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);\n        textImage = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);\n\n        JPanel controls = new JPanel(new GridLayout(0,1,0,0));\n        antialiasing = new JCheckBox(\"Anti-aliasing\", false);\n        rendering = new JCheckBox(\"Rendering - Quality\", true);\n        fractionalMetrics = new JCheckBox(\"Fractional Metrics\", true);\n        strokeControl = new JCheckBox(\"Stroke Control - Pure\", false);\n        colorRendering = new JCheckBox(\"Color Rendering - Quality\", true);\n        dithering = new JCheckBox(\"Dithering\", false);\n\n        controls.add(antialiasing);\n\n        controls.add(fractionalMetrics);\n\n        textLcdContrast = new JComboBox(VALUES_TEXT_LCD_CONTRAST);\n        JPanel lcdContrastPanel = new JPanel(new FlowLayout(FlowLayout.LEADING));\n        lcdContrastPanel.add(textLcdContrast);\n        lcdContrastPanel.add(new JLabel(\"Text LCD Contrast\"));\n        controls.add(lcdContrastPanel);\n\n        textAntialiasing = new JComboBox(VALUES_TEXT_ANTIALIASING);\n        controls.add(textAntialiasing);\n\n        controls.add(dithering);\n        controls.add(rendering);\n        controls.add(colorRendering);\n        controls.add(strokeControl);\n\n\n        ItemListener itemListener = new ItemListener(){    \n            public void itemStateChanged(ItemEvent e) {\n                updateImages();\n            }\n        };\n        antialiasing.addItemListener(itemListener);\n        rendering.addItemListener(itemListener);\n        fractionalMetrics.addItemListener(itemListener);\n        strokeControl.addItemListener(itemListener);\n        colorRendering.addItemListener(itemListener);\n        dithering.addItemListener(itemListener);\n\n        textAntialiasing.addItemListener(itemListener);\n        textLcdContrast.addItemListener(itemListener);\n\n        Graphics2D g2d = originalImage.createGraphics();\n        GradientPaint gp = new GradientPaint(\n            0f, 0f, Color.red,\n            (float)width, (float)height, Color.orange);\n        g2d.setPaint(gp);\n        g2d.fillRect(0,0, width, height);\n\n        g2d.setColor(Color.blue);\n        for (int ii=0; ii&lt;width; ii+=10) {\n            g2d.drawLine(ii, 0, ii, height);\n        }\n        g2d.setColor(Color.green);\n        for (int jj=0; jj&lt;height; jj+=10) {\n            g2d.drawLine(0, jj, width, jj);\n        }\n\n        gui.add(controls, BorderLayout.EAST);\n\n        JPanel images = new JPanel(new GridLayout(0,1,2,2));\n        images.add(new JLabel(new ImageIcon(textImage)));\n\n        try {\n            pngLabel = new JLabel(new ImageIcon(getPngCompressedImage(textImage)));\n            images.add(pngLabel);\n            jpegLabel = new JLabel(new ImageIcon(getJpegCompressedImage(textImage)));\n            images.add(jpegLabel);\n        } catch(IOException ioe) {\n        }\n\n        gui.add(images, BorderLayout.CENTER);\n        output = new JTextArea(4,40);\n        output.setEditable(false);\n        gui.add(new JScrollPane(output), BorderLayout.SOUTH);\n\n        updateImages();\n\n        JOptionPane.showMessageDialog(null, gui);\n    }\n\n    private Image getPngCompressedImage(BufferedImage image) throws IOException {\n        ByteArrayOutputStream outStream = new ByteArrayOutputStream();\n        ImageIO.write( image, \"png\", outStream );\n\n        pngSize = outStream.toByteArray().length;\n\n        BufferedImage compressedImage =\n            ImageIO.read(new ByteArrayInputStream(outStream.toByteArray()));\n\n        return compressedImage;\n    }\n\n    private Image getJpegCompressedImage(BufferedImage image) throws IOException {\n        float qualityFloat = (float)quality.getValue()\/100f;\n        ByteArrayOutputStream outStream = new ByteArrayOutputStream();\n\n        ImageWriter imgWriter = ImageIO.getImageWritersByFormatName( \"jpg\" ).next();\n        ImageOutputStream ioStream = ImageIO.createImageOutputStream( outStream );\n        imgWriter.setOutput( ioStream );\n\n        JPEGImageWriteParam jpegParams = new JPEGImageWriteParam( Locale.getDefault() );\n        jpegParams.setCompressionMode( ImageWriteParam.MODE_EXPLICIT );\n        jpegParams.setCompressionQuality( qualityFloat );\n\n        imgWriter.write( null, new IIOImage( image, null, null ), jpegParams );\n\n        ioStream.flush();\n        ioStream.close();\n        imgWriter.dispose();\n\n        jpgSize = outStream.toByteArray().length;\n\n        BufferedImage compressedImage = ImageIO.read(new ByteArrayInputStream(outStream.toByteArray()));\n        return compressedImage;\n    }\n\n    private void updateText() {\n        StringBuilder builder = new StringBuilder();\n\n        builder.append(\"Fractional Metrics: \\t\");\n        builder.append( fractionalMetrics.isSelected() );\n        builder.append(\"\\n\");\n        builder.append( textAntialiasing.getSelectedItem() );\n        builder.append(\"\\nPNG size: \\t\");\n        builder.append(pngSize);\n        builder.append(\" bytes\\n\");\n        builder.append(\"JPG size: \\t\");\n        builder.append(jpgSize);\n        builder.append(\" bytes \\tquality: \");\n        builder.append(quality.getValue());\n\n        output.setText(builder.toString());\n    }\n\n    private void updateImages() {\n        int width = originalImage.getWidth();\n        int height = originalImage.getHeight();\n\n        Graphics2D g2dText = textImage.createGraphics();\n\n        if (antialiasing.isSelected()) {\n            g2dText.setRenderingHint(RenderingHints.KEY_ANTIALIASING,\n                RenderingHints.VALUE_ANTIALIAS_ON);\n        } else {\n            g2dText.setRenderingHint(RenderingHints.KEY_ANTIALIASING,\n                RenderingHints.VALUE_ANTIALIAS_OFF);\n        }\n\n        if (rendering.isSelected()) {\n            g2dText.setRenderingHint(RenderingHints.KEY_RENDERING,\n                RenderingHints.VALUE_RENDER_QUALITY);\n        } else {\n            g2dText.setRenderingHint(RenderingHints.KEY_RENDERING,\n                RenderingHints.VALUE_RENDER_SPEED);\n        }\n\n        if (fractionalMetrics.isSelected()) {\n            g2dText.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,\n                RenderingHints.VALUE_FRACTIONALMETRICS_ON);\n        } else {\n            g2dText.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,\n                RenderingHints.VALUE_FRACTIONALMETRICS_OFF);\n        }\n\n        if (strokeControl.isSelected()) {\n            g2dText.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,\n                RenderingHints.VALUE_STROKE_NORMALIZE);\n        } else {\n            g2dText.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,\n                RenderingHints.VALUE_STROKE_PURE);\n        }\n\n        if (dithering.isSelected()) {\n            g2dText.setRenderingHint(RenderingHints.KEY_DITHERING,\n                RenderingHints.VALUE_DITHER_ENABLE);\n        } else {\n            g2dText.setRenderingHint(RenderingHints.KEY_DITHERING,\n                RenderingHints.VALUE_DITHER_DISABLE);\n        }\n\n        if (colorRendering.isSelected()) {\n            g2dText.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING,\n                RenderingHints.VALUE_COLOR_RENDER_QUALITY);\n        } else {\n            g2dText.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING,\n                RenderingHints.VALUE_COLOR_RENDER_SPEED);\n        }\n\n        g2dText.setRenderingHint(RenderingHints.KEY_TEXT_LCD_CONTRAST,\n            textLcdContrast.getSelectedItem());\n\n        g2dText.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,\n            textAntialiasing.getSelectedItem());\n\n        g2dText.drawImage(originalImage, 0,0, null);\n        g2dText.setColor(Color.black);\n        g2dText.drawString(\"The quick brown fox jumped over the lazy dog.\", 10,50);\n\n        try {\n            jpegLabel.setIcon(new ImageIcon(getJpegCompressedImage(textImage)));\n            pngLabel.setIcon(new ImageIcon(getPngCompressedImage(textImage)));\n        } catch(IOException ioe) {\n        }\n\n        gui.repaint();\n        updateText();\n    }\n\n    public static void main(String[] args) {\n        SwingUtilities.invokeLater( new Runnable() {\n            public void run() {\n                ImageCompressionDemo iwt = new ImageCompressionDemo();\n            }\n        } );\n    }\n}\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">1<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Need Java function that takes image and imagesize(in Kb) as input and return an image [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Keep adjusting the compression in this example until the image size in bytes is below the limit. Screen shot Typical outputs Fractional Metrics: true Nonantialiased text mode PNG size: 7390 bytes JPG size: 7036 bytes quality: 35 Fractional Metrics: true Antialiased text mode PNG size: 8741 bytes JPG size: 8663 bytes quality: 55 Fractional &#8230; <a title=\"[Solved] Need Java function that takes image and imagesize(in Kb) as input and return an image [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-need-java-function-that-takes-image-and-imagesizein-kb-as-input-and-return-an-image-closed\/\" aria-label=\"More on [Solved] Need Java function that takes image and imagesize(in Kb) as input and return an image [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1192,881,323,621],"class_list":["post-15819","post","type-post","status-publish","format-standard","hentry","category-solved","tag-image","tag-image-processing","tag-java","tag-swing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Need Java function that takes image and imagesize(in Kb) as input and return an image [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-need-java-function-that-takes-image-and-imagesizein-kb-as-input-and-return-an-image-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Need Java function that takes image and imagesize(in Kb) as input and return an image [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Keep adjusting the compression in this example until the image size in bytes is below the limit. Screen shot Typical outputs Fractional Metrics: true Nonantialiased text mode PNG size: 7390 bytes JPG size: 7036 bytes quality: 35 Fractional Metrics: true Antialiased text mode PNG size: 8741 bytes JPG size: 8663 bytes quality: 55 Fractional ... 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Screen shot Typical outputs Fractional Metrics: true Nonantialiased text mode PNG size: 7390 bytes JPG size: 7036 bytes quality: 35 Fractional Metrics: true Antialiased text mode PNG size: 8741 bytes JPG size: 8663 bytes quality: 55 Fractional ... 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