Bitmap

Displaying Bitmaps Efficiently on Android Apps

by #realJSOP

Determine the number of unique colors in an image

by Isaac RF

To create visually engaging apps, displaying images is a must. Learn to display Bitmaps Efficiently on your Android apps, without giving away performance. The post Displaying Bitmaps Efficiently on Android apps appeared first on Isaac RF.

Programming Nostalgia: revisiting Mike Wiering’s Mario Game Written in Pascal

by ToughDev

Revisiting Mario Game Written in Pascal

FITS to image and image transparency

by V.

Convert FITS file to known image formats and use those images for a "zooming" functionality (image transparency)

Latest Articles

Image Resizer: Monitor Folders for Incoming Images and Resize or Convert Formats Automatically

by honey the codewitch

Image Resizer automatically resizes images you drop in a monitored folder based on criteria you give it. It can also change image formats.

Programming Nostalgia: revisiting Mike Wiering’s Mario Game Written in Pascal

by ToughDev

Revisiting Mario Game Written in Pascal

Very Fast Image Blur in C# using Direct Bit Manipulation in Pure .NET

by pdoxtader

Very fast image processing without use of unsafe code

GFX Part 4: The ILI9341 Display Driver and JPEG Support

by honey the codewitch

Use an ILI9341 display efficiently from an ESP32 without the Arduino framework. Load JPEGs.

All Articles

top

Bitmap

19 Feb 2011 by #realJSOP

Determine the number of unique colors in an image

WinForms

How to deserialise a C# 4 bitmap to a Silverlight 4 Bitmap Image

12 Aug 2011 by #realJSOP

To convert a byte array to a BitmapImage object:MemoryStream stream = new MemoryStream(bytearray);BitmapImage image = new BitmapImage();image.SetSource(stream);At this point, you can set your object's Source property to your new BitmapImage object.myImage.Source = image;

c#: How to convert large bitmaps?

1 Dec 2011 by #realJSOP

You might want to look into using the FreeImage library or the ImageMajik library. I'm pretty sure one or both of them can handle images that size (GDI+ is the reason you can't do it in native .Net).Google is your friend.

convert

How do I bind an image to an UserControl (button with image) in a DataGrid

14 Jan 2015 by .Net Jim

Give the last entry in this blog a try.[^]

How to get bitmap variable from event befor executing method AcceptTcpClientAsync

22 Apr 2014 by 123456789igor

Hello, I'm use AForge framework and i get image capture from webcam, then i want to send this image from server to client. But the problem consists of that i get the bitmap variable, which gets in event, after executing method AcceptTcpClientAsync and bitmap variable is null. How to get image...

event

How to convert emf to ImageSource in WPF?

12 Apr 2012 by 45YG

I am trying to display a emf image in WPF application.I have succeeded to use the following two methods convert it,but both of they are so slow.I want get a fast way? Who can help me!! thanks....Method one :using (Stream stream = new MemoryStream(bytes)) { ...

How to make a Erase Brush/Pen

23 May 2011 by 94HellGate

whats the best way to make a simple erase brush / pen to erase parts of a transparency bitmap (with erase opacity)?

forms

How to make a Erase Brush/Pen

24 May 2011 by 94HellGate

i found another solutioncreate a texture brush based on the texture you are drawing with opacity (using a ColorMatrix) and set the graphics option CompositingMode to SourceCopy and draw your circle or whatever.some code:float[][] matrixItems ={ new...

forms

how to change image bitmap dimensions?

26 Jun 2015 by _Q12_

Bitmap img;//outside current method. private void Form1_Load(object sender, EventArgs e) { pictureBox1.SizeMode = PictureBoxSizeMode.Zoom; img = new Bitmap(file.FullName); if (img.Height >=...

how to change image bitmap dimensions?

26 Jun 2015 by _Q12_

it seem i got a stroke of geniality...:)i used the three rule.And is working perfectly... yuhoo. uc.pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage; img = new Bitmap(item.FullName); uc.pictureBox1.Image = img; ...

19 Feb 2011 by a_pess

I think we may check if the color is repeated or not, any how this another alternative but in VB.NetPublic Shared Function GetImageColorsCount(ByVal bitmap As Bitmap) As Integer Dim ColorList As New System.Collections.Generic.List(Of Integer) Dim clr As Integer For...

WinForms

Converting from Windows.Media.DrawingImage to Windows.Media.Imaging.BitMapImage or Windows.Media.ImageSource

3 Aug 2011 by Abhinav S

Try going through the discussion here[^].

Comparing Images using vb.net

26 Nov 2011 by Abhinav S

This[^] might help you.

"A generic error occurred in GDI+"

16 Mar 2014 by Abhinav S

Check the folder permissions where you are saving the file.You should have permissions to save the file.In addition, ensure that the file does not already exist and is open in another program.

.NET

Sending Image as a byte[] as a web service method arguments

16 Apr 2014 by Abinash_Sahoo

Here is an example which shows how to configure a Web service to handle the larger amount of datahttp://msdn.microsoft.com/en-us/library/aa528822.aspx[^]

ASP.NET

webservice

how to create a bitmap from intptr using c#

18 Feb 2014 by Adi5555

i am making a video stegnaography project in which i got the clone of the selected frames from the video and then i have to replace these embedded frames with the real frames in the video...i have used the avifile library so far and i use the cut function in the avi library...the cut function...

video

Copy save bitmap image to file C++

20 Aug 2016 by Afzaal Ahmad Zeeshan

This generic exception is the worst exception that one can get while working with graphics objects. It just simply doesn't provide anything at all. Quote:An unhandled exception of type 'System.Runtime.InteropServices.ExternalException' occurred in System.Drawing.dll Additional information: A...

Drawing line over a bitmap loaded in WinCE, using GDI APIs

2 Apr 2012 by ajaiisnow

Hai, my requirement is to draw a line over a bitmap loaded into memory. i am working in WinCE. The code i wrote is like this, HGDIOBJ hPrevObj = 0; HGDIOBJ hPrevObj1 = 0; BOOL bStat = 0; dwError = ::GetLastError(); hDCMem =...

WinCE

GDI

rotating a bmp file using C++ ?

21 Feb 2015 by Alexis i

#include#include

Is there any ways to rotate a bmp 90 degrees using c++?

23 Feb 2015 by Alexis i

i'm trying to rotate a 686*800 bmp photo 90 degrees.here's my code, it corrupts the file!#include#includeusing namespace std;int main(){ fstream flower("flower.bmp", ios::in | ios::out | ios::binary); flower.seekg(18,ios::beg); char...

25 Feb 2015 by Alexis i

here's my code, it corrupts the photo i donno why!** its a 24-bit bitmap **#include#includeusing namespace std;int main(){ fstream flower("flower.bmp", ios::in | ios::out | ios::binary); //declaring an array which holds data bytes belong to 800*686...

How to move a bitmap on android canvas ?

28 Feb 2015 by Allwin456

I have this bitmap drawn on android canvas - protected void onDraw(Canvas canvas) { super.onDraw(canvas); Bitmap myBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.pic1); canvas.drawBitmap(myBitmap, 0, 0, null); ...

Can not obtain dialog's background bitmap from treeview's subclass procedure

4 Apr 2014 by AlwaysLearningNewStuff

I have a dialog box with a bitmap as background.I am trying to create transparent treeview so I need to grab the underlying bitmap from treeview's WM_PAINT handler, but I do not know how to do this.I assume that I will need ScreenToClient and ClientToScreen APIs, but I do not know how to...

ClearType ruins transparency

10 May 2014 by AlwaysLearningNewStuff

I have a bitmap which background needs to be replaced with part of another bitmap. Everything works fine until I enable ClearFont on my WindowsXP.In order to explain my problem better, let us label first bitmap as bmpDestination and second as bmpSource.Here[^] is how the bmpSource looks...

Win32

Binary data image to black and white image file C#

4 Jan 2018 by Amedora Ahmed

I am reading binary data image from a serial port device how can i write it to a black and white image file. The project is a bill counting machine which solution. the device scans images of serial number of bill counted including the data counter Below is the data returned from the device as...

position of picture in C#

13 Sep 2011 by AmirAli1374

Bitmap ax = new Bitmap(300, 300); Rectangle rc = new Rectangle(0, 0, 300, 300); this.DrawToBitmap(ax, rc); pictureBox1.Image = ax;after running this code we have an image of part of form (from point(0,0) to point(300,300)) but i want an...

Converting a BitmapImage

6 Sep 2012 by Amund Gjersøe

According to Microsoft you should be able to use BmpBitmapDecoder (or the decoder of choice). I've tested, and it worked:Stream bmpStream = new System.IO.FileStream("smiley.bmp", FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);BmpBitmapDecoder bmpDecoder = new...

conversion

convert

25 Feb 2015 by Andreas Gieriet

Rotating a matrix by 90 degree is done by the following transformation of zero-based indices:A = N x M original matrixB = M x N transformed matrix (i.e. rotated by +90 degree)A[i,j] -> B[M-j-1,i]So, you read the data into the original matrix in memory, create a transformation matrix in...

20 Feb 2011 by Andrew Rissing

Just a few minor improvements to readability and such...The catch/throw isn't needed here, since you are just throwing it without doing anything in the catch block. A try/finally could have been used on its own.The try/finally isn't necessary because a using statement can achieve the same...

WinForms

Getpixel returns 0 for any bitmap

20 Oct 2011 by André Kraak

The Bitmap[^] you are creating with Bitmap newBitmap = new Bitmap(img.Width, img.Height); has a default black background. So all the values in your 2D array will be 0.Before you start checking for colour you will need to place a colour picture in your bitmap.Notes:1 - Remove...

C# is there a way to minimize a BYTE size of image before sending to server using sokcet

28 May 2019 by AntonioLeonardo

The imagem compression follow another objects and features that different of trivial files; image compreession has properties to equalize the compression. Like code bellow, the compression act on Quality property: static byte[] CompressByImageAlg(int jpegQuality, byte[] data) {...

Screen Recorder

4 Oct 2016 by Arun Chandrasekhara Pillai

Create a screen recorder using C#

Bitmap increases tif size after reaching a certain point

20 Apr 2020 by AskalotLearnalot

I am using Bitmap to water mark tif image files after it reach file number 440 the image size increases which results in a small text watermark. My method is designed to process large amount of files, it also checks if the image is colored or not...

ASP.NET5

how to assemble peices of in png format into ful image in asp.net

2 Dec 2014 by Azeem Tariq

i have an issue. actually i have cut down an image into pieces and after changing colors of the pieces i save them on server now i assemble these pieces on web page to make full image now i want to save full image on server. i have prices now and want to make full image from them. is it possible...

PNG

What reference do I need to add to a Windows Store app to use the Bitmap class?

21 Oct 2014 by B. Clay Shannon

I need to use a Bitmap class in my app, but this code: public class PushpinMetadata { public string FileName { get; set; } public DateTime DateTimeTaken { get; set; } public Bitmap thumbnail { get; set; } }...fails because...

Windows-Store

What reference do I need to add to a Windows Store app to use the Bitmap class?

21 Oct 2014 by B. Clay Shannon

Aha, voila, and Eureka - it's apparently BitmapImage that I need.

Windows-Store

25 Feb 2015 by BacchusBeale

If you are writing code for windows you can use .Net library to help you:Rotate image[^] then it will work for any image.As already mentioned it is not good to use hard-coded values, they should be parameters to your method.Also using a Hex Editor can help you see what the file really...

how to improve printed text quality after using “graphics.DrawString”?

3 Dec 2013 by Bahram Ettehadieh

Use this: graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; graphics.DrawString(... worked for me

C# WPF Show Bitmap To Canvas

24 Jun 2014 by Balav4

Hi Try this MemoryStream Ms = new MemoryStream(); System.Drawing.Bitmap ObjBitmap = null; ObjBitmap = //Load your Image; ObjBitmap.Save(Ms, System.Drawing.Imaging.ImageFormat.Bmp); ...

[C#] RTF text to bitmap image? Any easy way around?

1 Oct 2012 by Bernhard Hiller

You need the Graphics.DrawString method. You can get the Graphics object by Graphics.FromImage. And then draw all the text your self...

Accessing a bitmap with pointers

16 Jul 2012 by bikekowal

Hi all,I have a following problem. I want to build a application processing images from a camera in real time. The problem is that I cannot get to the bitmap data correctly. The following piece of code is running without errors but the problem is that the images don't change. The code...

processing

want to blur an image

29 Aug 2012 by BillW33

If you are using EMGU, as it says in your tag, you can call cvSmooth. I have discussed the parameters below and shown an example of the call.Image inputImage;//Set inputImage to whatever image you want to smoothImage smoothedImage = new Image

Emgu-CV

How i can get the colors of a bitmap image and show them on a pallet

23 Nov 2013 by BillWoodruff

On November 13, this year, I posted a very complete code example for analyzing all the colors in a bitmap: you could easily adapt that code to your goal: [^].

how to merge two images without merging their borders

13 Dec 2014 by BillWoodruff

Whether two images can be merged (composited) in a way that no unusual boundary (artifacts) will appear in the merged image, depends entirely on the images you are attempting to merge !And, I propose to you that ... unless you are in the fortunate position of having images with the same...

Design

Extract RGB values from Bitmap Image

9 Oct 2015 by binaryoffset

Hello. I am currently trying to extract R, G, B values from a 256 colour bitmap image (using for testing purposes a fixed width of 152 and height 150). I have checked using BITMAPINFOHEADER and BITMAPFILEHEADER that the offset is 1078 and bytes per pixel is 1.The image data is initially...

Structure RGB values back into BITMAP image file

12 Oct 2015 by binaryoffset

Hello all.I am currently working on imaging processing using arrays to store R,G,B values from a 24 bit BITMAP image of width 120 and height 100 pixels.Visual Studio 2010 is being used. I have currently extracted the individual R,G,B values into three separate2D arrays from the 24 bit...

Copy save bitmap image to file C++

20 Aug 2016 by binaryoffset

Hello. I am trying to copy and save the contents of a Bitmap class image to a *.bmp file but currently receive Unhandled Exceptions during run-time of the console program. I would be grateful to learn where the error lies and how to fix this program. Thank you.Below is the main part of the...

How can I stop flickering when I have a large number of dynamically created rectangles to display on screen.

Can't display bitmap in win32

22 Dec 2014 by bling

You need to assign bitmapData to the return value for Lockbits. BitmapData bitmapData = bmp.LockBits( &rect, ImageLockModeWrite, PixelFormat32bppARGB, &bitmapData);

Structure RGB values back into BITMAP image file

12 Oct 2015 by bling

I do not know if this will fix all your problems but, try replacing this: array_1D[offset + i+0] = arrayB_2D[j][counter++]; array_1D[offset + i+1] = arrayG_2D[j][counter++]; array_1D[offset + i+2] = arrayR_2D[j][counter++];... with this ... array_1D[offset + i+0] =...

4 Nov 2015 by bling

Turn on double buffering on the form.https://msdn.microsoft.com/en-us/library/3t7htc9c%28v=vs.110%29.aspx[^]

How can I stop flickering when I have a large number of dynamically created rectangles to display on screen.

4 Nov 2015 by bling

Your paint handler looks strange to me. private void Form1_Paint(object sender, PaintEventArgs e) { gDisplay.DrawImage(bitmap, new Point(0, 0)); }Try this:private void Form1_Paint(object sender, PaintEventArgs e){ ...

Bitmap question: HBITMAP

10 Jul 2011 by Bob Namenottaken

Using SetBitmapBits is confusing me. Is its sole purpose to transfer my array of pixel info to a buffer owned by the handle "HBITMAP" ?Is there a way to know where this buffer is located and write to it directly?Seems like a waste of time to draw on your own array and then perform a huge...

position of picture in C#

14 Sep 2011 by BobJanova

pictureBox1 must be a control on the form. Try moving the picture box to an origin of (300, 300).

[C#] RTF text to bitmap image? Any easy way around?

2 Oct 2012 by BobJanova

There are two options here:You can write the text to a RichTextBox and then screen capture it with Control.DrawToBitmap[^]. You probably need to post-process the Bitmap you get to sort out the transparency.You can write a miniature RTF (or HTML or other tagging system; RTF is pretty...

Change wallpaper with C# or remove the wallpaper for good

30 Apr 2016 by ByeByeByeByeBye

how would I change the wallpaper with C# back to a known path of a bitmap or remove the wallpaper for good? Is there any command for it. A SendKeys Combo would be fine.Can't access my wallpaper settings manually any longer, it's been greyed out all options and I have a strange bitcoin...

How do I bind an image to an UserControl (button with image) in a DataGrid

14 Jan 2015 by Carpi_1968

I'm working on a small project, where I need a DataGrid where a column contains an imageButton as a UserControl.What I'm struggling with is how to bind the image source to the image in my UserControl.I stripped everything down to only have this function left and I guess I'm just missing...

Comparing Images using vb.net

26 Nov 2011 by chieto

Anyone here know how to compare 2 images. . and then show how many percent from before and after image captured. thanks in advance.

Comparing Images using vb.net

26 Nov 2011 by chieto

Thanks for your reply. . but what algorithm im going to use?Thanks

how can I improve image quality for printing?

31 Jul 2012 by Christian Graus

The only real way to improve print quality is to create a larger bitmap that is finer quality. GIGO.graphics.FromImage(bitmap) creates an exact copy, though, you should not lose quality doing that.

Data offset bmp image

27 Aug 2012 by Christian Graus

This[^] is a wikipedia entry on the BMP file format, specifically, the header.

want to blur an image

28 Aug 2012 by Christian Graus

We have no idea what library you're using. My articles include instructions on how to blur an image, you could use that code with the areas you're detecting to blur an area.

Emgu-CV

C++ Scanline functionality in embarcadero's builder

3 Dec 2017 by completeknowitall

Um.. I thought I understood scan line... but when I step through the code, the source pointer remains empty and nothng gets transferred. I you have any advice, I'm listening. this is the core of my code, I'm hoping to do stuff to the pixels between reading and writing, but this part doesn't...

Create a bitmap object from memory

3 May 2011 by CPallini

Why don't you use CImage[^] instead?It can directly load jpeg and png files.

Header file to Visual Basic code translation

16 Dec 2013 by CPallini

GetBuffer is useless in both C++ and VB.NET programs.

string

25 Feb 2015 by CPallini

You have to take into account that bitmaps have rows aligned on 32 bits (i.e four bytes) boundaries (they are padded). The original bitmap, having width 800 doesn't need padding (hence is size is exactly 1646454 bytes) while the rotated image needs it (686 % 4 is non-zero), that is you need to...

I want convert from AVI to BITMAP

29 May 2015 by CPallini

We have an article on this very topic: "Extracting AVI Frames"[^].

video

C# is there a way to minimize a BYTE size of image before sending to server using sokcet

29 May 2017 by CPallini

As already noted you usually can't gain much trying to compress a JPEG image, which is alreay compressed. In your code you changed the image size, making it smaller. If it is acceptable to make it even more smaller, then you may save some memory.

Gifdecoder,BitmapSource and System.Windows.Controls::Image in mfc

19 Dec 2012 by d rasool

hi.first of all sorry for my bad english.i need make a CBitmap or a streamdata from a System.Windows.Controls::Image(rendered out put)in a SDI mfc application (supporting \clr).here is my codes:using namespace System;using namespace System::IO;using namespace...

Convert Silverlight WriteableBitmap to ASP.Net Bitmap

2 Apr 2013 by d_lucifer

hi friends, my application take snapshots using webcam and save them in a local folder. so i'm using following code to convert my Silverlight Image and send it through the Web Service. name of my web service is ImageService. ImageServiceSoapClient client = new...

Silverlight5

ASP.NET

What reference do I need to add to a Windows Store app to use the Bitmap class?

21 Oct 2014 by DamithSL

Add: using Windows.UI.Xaml.Media.Imaging;Reference: Loading and processing bitmaps[^]

Windows-Store

Sending Image as a byte[] as a web service method arguments

16 Apr 2014 by danee54

I am facing a problem: When i try to send a small size byte arraybyte[] s = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }; it is easily received and inserted in the database successfully. But when i try to send a byte array of image, then it throws an exception as below:Quote:The request...

ASP.NET

webservice

Drawing an Image as a 3-D Surface

27 Jul 2011 by Darryl Bryk

Code is described for drawing an image as a 3D surface plot using OpenGL

how to improve printed text quality after using “graphics.DrawString”?

26 Jul 2012 by Dave Kreskowiak

It's not entirely clear what you're doing, so are you saying that you're writing this text to an image and then printing the image??Yeah, that's going to severely screw up any aliasing you do. Why??Because the image that you're drawing on is 96 DPI and when you print that image on...

How to keep the image size and decrease the amount of pixels?

19 Mar 2013 by Dave Kreskowiak

You don't.Reducing the number of pixels will ALWAYS reduce the image size. With a "reduced" number of pixels, you get the illusion of a larger image only when it's displayed by scaling up a smaller image fit a display area larger than the image. This results in a fuzzier display and a...

C++ Scanline functionality in embarcadero's builder

5 Jan 2016 by Dave Kreskowiak

I haven't touched C++ in about 5 years and I've never even heard of Embarcadero, but... it looks like your cast is being applied to the wrong item. Shouldn't it be something like:Sbyte = (TRBGTriple *)(Source->scanline[y]);

Capture Hidden Webbrowser Control

22 Sep 2011 by DaveAuld

Here's an example;http://www.geekpedia.com/code140_Taking-Website-Screenshots-With-The-WebBrowser-Control.html[^]

take screenshots from a specific region very fast

8 Nov 2015 by dedo lore

Hi,i want to take continuously screenshots from five different positions on my desktop very fast. The CopyFromScreen mothod is unfortunately to slow.I found:Very fast screen capture using DirectX in C#[^]but i dont know:- how to take a screenshot with directX on my secondary...

DirectX

openFileDialogue Bitmaps C#

2 Feb 2013 by defunktlemon

Hi. I would like to do some image processing in C# and need to align two images before applying a filter to them. I will attempt to do this by scanning the images at a fixed point in a small rectangular section, which I believe makes it necessary to use the Bitmap class. This section has a large...

openFileDialogue Bitmaps C#

2 Feb 2013 by defunktlemon

oh! I think I see. It worked. So, I just wasn't passing anything into the pictureBox. I am now passing the ofd file.Thanks a lot :)

Getpixel returns 0 for any bitmap

20 Oct 2011 by difemen

Hi,sorry my braziliam english.im trying to do a little program that create a 2d array that returns 1 if have color or 0 if no but ever return 0. can anybody help me? i used a listbox to see the returnsBitmap newBitmap = new Bitmap(img.Width, img.Height); byte[,] buffer = new...

Vb.net bitmap blurred when saved

25 Jun 2014 by DrGrim

hello once again !could someone tell me how could i save an image that i drew (painted) on it with the same image quality as the original image ?i'm using this code to save the image :Using Bmp As New Bitmap(PictureBox4.Image, defaultWidth, defaultHeight) Using G As...

drawing

Vb.net bitmap blurred when saved

25 Jun 2014 by DrGrim

Thank you OriginalGriff , i have tried your way and with no result from what i have read on google this blur appears due to the bitmap resize .

drawing

Android drawing on bitmap is disappear after touch up event

4 Oct 2015 by dsz_848

I am trying to implement an application to get an image from the device and add it to the canvas then start drawing on it using brush and eraser (like snapchat idea) I used Drawing app as a basehttp://code.tutsplus.com/series/create-a-drawing-app-on-android--cms-704My problem for now is...

C# TPL Projection in height direction

4 Nov 2012 by DX.Zong@hotmail.com

hi,I have written code like this: private static unsafe Point[] Hproject(Bitmap bmp) { int height = bmp.Height; int width = bmp.Width; Point[] result = new Point[height]; var data = bmp.LockBits(new Rectangle(0, 0, width, height),...

C# TPL Projection in height direction

4 Nov 2012 by DX.Zong@hotmail.com

Is anyone help me to check the upper code?

capture mouse cursor image and convert it as a buffered image c++

17 Jul 2012 by E.F. Nijboer

The following should give you hex values:cout

WTLIPicture Viewer: An Update to the WTL BmpView Sample Application

29 Jun 2011 by Ed Gadziemski

An updated version of the WTL BmpView sample application using an OLE Picture object to handle multiple image types

Bitmap question: HBITMAP

10 Jul 2011 by Emilio Garavaglia

GDI object's internal data don't belong to your process but to the GDI subsystem. You cannot read/write to them directly because there is a "process boundary" in between (they can even be on another machine!).The memory itself can be moved around by the GDI functions, without your program...

C++ 2d array to bitmap

23 Jul 2012 by enhzflep

I did something like this years ago when creating a series of images that could be used as a height-map for surface of an animated, windswept ocean. Lots of fun at the time in that one... Complex Numbers --> rgb images. :wtf:Anyhow, a couple of questions that come to mind:1. What's the...

C++ 2d array to bitmap

23 Jul 2012 by enhzflep

I'd have preferred to add this code to a comment, but it's just impractical for so many reasons.Here's the code I had in the project I mentioned earlier. It does seem a bit funky now, some 4 1/2 years on - I think saveBMPfloat would be the easiest/quickest to modify. Just snip/replace the...

Setalphabitmap not working

16 Jan 2017 by EsakkiRaja

Hi all,I am trying to draw a line over the live video streaming in direct show application. Am successfully drawing a line but if I continuously want to create a line by calling the below function, i got an error E_OUTOFMEMORY from the SetAlphaBitmap(). Am calling drawlineOverlay() function...

directshow

How to use bitmap in C#

24 Nov 2016 by F-ES Sitecore

You only include the namespace in the "using", not the class nameusing System.DrawingIf you're struggling to even create a class you're really going to struggle doing anything more advanced. I'd get a book on c# and start learning the basics before moving on to anything else.

Bitmap method clone(bitmap, format) will not compile

31 Oct 2018 by F-ES Sitecore

You're missing some parenthesis. newImage = ((Bitmap)image).Clone(sRec,PixelFormat.Format16bppArgb1555); In your original code "(Bitmap)image.Clone" You are calling the Clone method on whatever type image is, you're not calling it on image cast to Bitmap. By adding the parenthesis you are...

How to deserialise a C# 4 bitmap to a Silverlight 4 Bitmap Image

12 Aug 2011 by fasan21

HiThis seems to be quite a tricky one.I am uploading images into a database using C# 4.I serialize them, then convert them to byte[] so that they can be loaded into a "Image" type field.This works great.If I convert back from byte[] to string and save the image, it saves...

How to deserialise a C# 4 bitmap to a Silverlight 4 Bitmap Image

28 Sep 2011 by fasan21

I used normal deserializing in my webservice of my asp app.

convert from PDF to Bimap

28 Sep 2012 by fjdiewornncalwe

As Richard already noted, A PDF file is not a simple byte array. This[^] article may shed some light on how you need to pursue this.

Metro-design

PDF

ignore a rectangular area in a bmp image during image comparison

16 Mar 2015 by Frankie-C

Read the four bytes together as DWORD, or unsigned int as you prefer, dimension your image arrays as same var type and you're done ;)#include #define WID 200#define DEP 600 typedef struct {int left;int top;int right;int bot;} rect; DWORD...

BitmapImage Collection Memory Management

23 Nov 2011 by Freeboss

Hi,Let's create a:ObservableCollection BitmapsLists = new ObservableCollection();Then let's fill it with some random Images: foreach (string item in Directory.GetFiles("Some Folder")){ BitmapImage BitImage = new BitmapImage(); ...

Canvas

BitmapImage Collection Memory Management

23 Nov 2011 by Freeboss

I found it.. I'll post the solution l8---------------------------------Just Because you create a BitmapImage using a Uri as source doesn't mean that it it being created at the same time even if you set the BitmapCacheOption to whatever value..The BitmapImage is gonna get Loaded into...

Canvas

What's the best method for rendering a decoded frame?

18 Apr 2019 by Fueled By Decaff

You are trying to perform UI(User Interface) operations on a thread that is not the UI thread. Either create and display the Bitmap in the backgroundWorker1_ProgressChanged method or use this.Invoke to execute code on the Form UI thread and generate the Bitmap and display it in the method...

ffmpeg