Convert jpeg/png to an array of pixels in java. 2. Fast gathering image on screen and reading the pixels. 0.

2010年11月18日 · main needs to be static, and must have an argument of String[], not String. To fix this stick everything in a constructor, such as

2010年10月12日 · I want to load (and decode) PNG images and convert them into a one-dimensional array in Java. I can obviously do this with ImageIO.read() and then copy the pixels into the array, but that consumes twice the memory (the raster + the final array) and it involves more processing time than I would like.

2016年7月8日 · This is what I ended up doing, I was thinking toooo far outside of the box when I asked the question.. // these are the imports needed import java.awt.image.BufferedImage; import java.io.File; import javax.imageio.ImageIO; import java.io.ByteArrayOutputStream; // read a jpeg from a inputFile BufferedImage bufferedImage = ImageIO.read(new File(inputFile)); // write the bufferedImage back to ...

2015年10月27日 · I also found that reading a PNG image into a BufferedImage with ImageIO (Java 6) and writing it out to a JPG "format name" corrupted the image. The image was there, but the colors looked "solarized" and almost inverted. The JPG file was much smaller than the PNG file for sure, so a lot of compression was done.

2011年11月20日 · Draw a circle on a PNG file in Java. 0. PNG file saves as a completely black image-1.

2013年5月4日 · Is there a way to save a JPanel's paintComponent contents into a .png file? Preferably with java.io or some other built-in library. Thanks.

2011年6月27日 · I would like to write metadata to a PNG image that I create. My understanding of Java Advanced Image API is that I should use IIOMetadata , but code snippets I found seem overly complicated. Then I searched for a library and found Sanselan but it seems a bit old, and not very handy for writing metadata.

Here's how I do it (with a little more info on how to load an image): import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.logging.Level; import java.util.logging.Logger; import javax.imageio.ImageIO; import javax.swing.JPanel; public class ImagePanel extends JPanel{ private BufferedImage image; public ImagePanel ...

2012年12月3日 · This Friday I need to hand in my Java project – I've only been programming for about two weeks now – and I really want to add a PNG file to my JPanel. Below you find my code, the name of the image is java.png, I put it in the same folder as my src files. I just can't find a good tutorial on how to do this.