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问题 I am creating a Zip file containing both text files and image files. The code works as expected when running on MacOS, but it fails when running on Windows because the image file contents are not read correctly. The snippet below always reads PNG image files as '‰PNG', adding a 5 bytes file in the Zip for each PNG image. Is it an issue regarding Windows environment? zip_fs.file.open(destination, 'w') do |f| f.write File.read(file_name) end 回答1: from Why are binary files corrupted when zipping

问题 I have some images whose type is PaletteAlpha and which have to be TrueColorAlpha . I am trying to use the command convert testein -type TrueColorAlpha testeou to do this conversion but the result is an image which still has Type: PaletteAlpha . Is this behaviour expected? How can I transform from one type to the other? I have also tried things such as PNG:testeou but with no results. My IM version is 6.7.8-9 . 回答1: The PNG32: prefix forces the output PNG to be RGBA: convert logo:

问题 i am making an animation in opegle with pngs and considering to use the highest qaulity compression and not use pvr conversion. Does anyone know the maximum amount of frames you can do before the processor starts getting chuggy? and i have a series of frames i would also note that my png sequence is roughly 75 frames and many in which are being repeated to help out. all the best, charlie 回答1: If all you are doing is animating through 75 PNG images, you might want to skip OpenGL, and just use

问题 i using ">gnujavaplot and i not found a way to make outputs image files. I just plot in gnuplot window, i need the plot output in png file. I need something like: $ a set terminal png $ set output "filename.png" in gnujavaplot. THanks. 回答1: i just copy my actual code, withoout editing, so there is a few overhead, but i think you should get the thing. The interesting part starts at ImageTerminal png = new ImageTerminal(); and dont miss the end of the code! greetings import java.io.File; import

问题 i using ">gnujavaplot and i not found a way to make outputs image files. I just plot in gnuplot window, i need the plot output in png file. I need something like: $ a set terminal png $ set output "filename.png" in gnujavaplot. THanks. 回答1: i just copy my actual code, withoout editing, so there is a few overhead, but i think you should get the thing. The interesting part starts at ImageTerminal png = new ImageTerminal(); and dont miss the end of the code! greetings import java.io.File; import

问题 Nothing seems to work so far. I got to see with pnginfo the following message: concept_Sjet_dream6.png... Image Width: 200 Image Length: 240 Bitdepth (Bits/Sample): 8 Channels (Samples/Pixel): 2 Pixel depth (Pixel Depth): 16 Colour Type (Photometric Interpretation): GRAYSCALE with alpha channel Image filter: Single row per byte filter Interlacing: No interlacing Compression Scheme: Deflate method 8, 32k window Resolution: 11811, 11811 (pixels per meter) FillOrder: msb-to-lsb Byte Order:

问题 Nothing seems to work so far. I got to see with pnginfo the following message: concept_Sjet_dream6.png... Image Width: 200 Image Length: 240 Bitdepth (Bits/Sample): 8 Channels (Samples/Pixel): 2 Pixel depth (Pixel Depth): 16 Colour Type (Photometric Interpretation): GRAYSCALE with alpha channel Image filter: Single row per byte filter Interlacing: No interlacing Compression Scheme: Deflate method 8, 32k window Resolution: 11811, 11811 (pixels per meter) FillOrder: msb-to-lsb Byte Order:

问题 I'm building a framework in my Xcode project. To build the framework, I created an aggregate target. The framework consists of the static library, header files, and bundle of .png assets, MyFrameworkResources.bundle . When I build the aggregate, everything is successfully created and the bundle exists in my Products directory. Also in my Xcode project is a target Application. This application is for testing the framework products (static library, header files, and bundle). I've added the

问题 Ok people, despite the best-known-practices, today I decided to do this: <img src='<? include("dir/dir/img.png"); ?>'> With 6 diferent .png images. Sadly, only 2 of the 6 were nicely visible on the browser. Why only 2 of the 6 images were shown? Maybe there were data losses bits on the way? Thank you for your time :] 回答1: It does not work because src attribute of an <img> tag is not supposed to contain the raw data of an image; rather, it is supposed to contain a URI that points to the image

问题 I'm looking for the fastest way to write pixels on javafx.scene.image.Image . Writing to BufferedImage 's backing array is much faster. At least on the test image I made it took only ~20ms for BufferedImage , WritableImage on the other hand took ~100ms. I already tried SwingFXUtils but no luck. Code for BufferedImage (faster): BufferedImage bi = createCompatibleImage( width, height ); WritableRaster raster = bi.getRaster(); DataBufferInt dataBuffer = (DataBufferInt) raster.getDataBuffer();