bitmap

问题 I am building a C# app that creates many bitmaps (System.Drawing.Image). Having the bitmaps seen in the debugger as pictures, would be of enormous help. The debugger has native support for XML files. Is there a way to see the pictures? 回答1: There is no debugger visualizer by default for Bitmap, so you might want to give this one a try: http://imagedebugvisualizer.codeplex.com/ 回答2: Another open source image and bitmap visualizer which works in Visual Studio 2019: https://github.com/Jaex

问题 I am building a C# app that creates many bitmaps (System.Drawing.Image). Having the bitmaps seen in the debugger as pictures, would be of enormous help. The debugger has native support for XML files. Is there a way to see the pictures? 回答1: There is no debugger visualizer by default for Bitmap, so you might want to give this one a try: http://imagedebugvisualizer.codeplex.com/ 回答2: Another open source image and bitmap visualizer which works in Visual Studio 2019: https://github.com/Jaex

问题 java.lang.RuntimeException: android.os.TransactionTooLargeException: data parcel size 51924760 bytes when one image is select from gallery is work but when i am try to update same image with new image from gallery in android it show this error and application crash Solution for this problem is given below // when you pass bitmap through listview adapter to get this in Fragment imageBitMap = getArguments().getParcelable("bitmapImage"); profileImageView.setImageBitmap(imageBitMap); //Add this

问题 I have a bitmap: Bitmap UnitImageBMP And I need to rotate it an arbitrary number of degrees. How do I do this? The RotateFlip method will only rotate in increments of 90 degrees. 回答1: I did some searching for you and found this: public static Bitmap RotateImage(Bitmap b, float angle) { //create a new empty bitmap to hold rotated image Bitmap returnBitmap = new Bitmap(b.Width, b.Height); //make a graphics object from the empty bitmap using(Graphics g = Graphics.FromImage(returnBitmap)) { /

问题 I have a bitmap: Bitmap UnitImageBMP And I need to rotate it an arbitrary number of degrees. How do I do this? The RotateFlip method will only rotate in increments of 90 degrees. 回答1: I did some searching for you and found this: public static Bitmap RotateImage(Bitmap b, float angle) { //create a new empty bitmap to hold rotated image Bitmap returnBitmap = new Bitmap(b.Width, b.Height); //make a graphics object from the empty bitmap using(Graphics g = Graphics.FromImage(returnBitmap)) { /

问题 I seem to be having trouble creating a Bitmap from fileUri. I would like to be able to set this Bitmap to an Imageview for previewing the image, and later adding elements to the image. Any ideas why the image does not get set properly? public class FeedActivity extends Fragment implements OnClickListener { ImageView m_ImageView; ImageButton btnCamera, btnGallery; private final String TAG_CAMERA_FRAGMENT = "camera_fragment"; private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;

问题 I have an image in memory with the following byte layout blue, green, red, alpha (32 bits per pixel) The alpha is not used. I want to draw it to a window using GDI. Later I may want to draw only a smaller part of it to the window. But the bitmap in memory is always fixed at a certain width & height. How can this bitmap drawing operation be done? 回答1: SetDIBitsToDevice and/or StretchDIBits can be used to draw pixel data directly to a HDC if the pixel data is in a format that can be specified

问题 Why can bitmaps with pixel depth higher than 8 bit can do without a color table and the ones with 8 bit and below require a color palette table ? 回答1: Because bitmaps with a pixel depth of 8 bits and lower do not necessarily use a fixed color table. Instead, they define a custom optimized 8-bit color table that contains only the specific colors used in that particular bitmap image. In other words, they use a "selective" palette. Remember that bitmaps are indexed images, which means that the

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago . Improve this question I want to draw a polyline on a Bitmap which contains a picture but I don't know if I can draw a polyline on a Bitmap. Any idea ? Thanks for help. 回答1: You can use following function: canvas.drawLines(float[] pts, int offset, int count, Paint paint); OR canvas.drawPath(Path

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago . Improve this question I want to draw a polyline on a Bitmap which contains a picture but I don't know if I can draw a polyline on a Bitmap. Any idea ? Thanks for help. 回答1: You can use following function: canvas.drawLines(float[] pts, int offset, int count, Paint paint); OR canvas.drawPath(Path