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Great Reads

Fast OctTree-Based Nearest Color Search

by dynamichael

Build an oct-tree from a color palette for a fast nearest color search

DCR (Digital Camera Raw) File Format

by LeisureBamboo

Some kinds of DCR files' format/data structure

Latest Articles

DCR (Digital Camera Raw) File Format

by LeisureBamboo

Some kinds of DCR files' format/data structure

Fast OctTree-Based Nearest Color Search

by dynamichael

Build an oct-tree from a color palette for a fast nearest color search

All Articles

BMP

Fast OctTree-Based Nearest Color Search

25 May 2019 by dynamichael

Build an oct-tree from a color palette for a fast nearest color search

rotating a bmp file using C++ ?

22 Feb 2015 by Sergey Alexandrovich Kryukov

I was afraid that my suggestion to "think a bit" could possibly offend you a bit, so I probably have to illustrate what this thinking could mean.Suppose you have some bit data, which tells you (forget the "format", it is irrelevant):you have width = 3, height = 2, and pixels data...

Unicode , UTF16, .NET – string, CodePoint out of BMP (Basic Multilingual Plane)

15 Jan 2015 by Sergey Alexandrovich Kryukov

You should never assume any particular UTF encoding. All the .NET API is well abstracted from this representation. Remember that with all UTFs except UTF-32, the characters are represented using different number of bytes. With UTF-16, characters beyond BMP are encoded using surrogate pairs. You...

rotating a bmp file using C++ ?

21 Feb 2015 by nv3

Just exchanging width and height will not rotate the image. You also need to rotate the bitmap data pixel by pixel. That requires quite a bit of buffer handling and data shoveling. For an example how to do it, look here: Add fast user-extensible image processing support to CBitmap[^]

How to create bmp image files to represent all colors sequentially

21 Aug 2018 by OriginalGriff

If I read you right, you want to create a file for each of the possible colours that a bitmap can contain. That's not necessarily a problem, but the reason it doesn't work for you is that you are running out of file handles. Because you don't close your files when you are finished with them,...

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

23 Feb 2015 by KarstenK

as barneyman wrote rotating the bmp in memory is the right solution.Read the outstanding article CXImage which provides some tons of features and also rotating code. In the sources you will find some code for rotating images.

stuck in rotating a bmp photo 90 degrees using C++

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...

stuck in rotating a bmp photo 90 degrees using C++

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...

How can I convert a BMP to TIFF image without using any library

5 Apr 2016 by Jochen Arndt

If you don't want to use a library you have to write the code yourself. You may have a look at the sources of open source libraries like ImageMagick: Convert, Edit, Or Compose Bitmap Images[^] or it's derivate GraphicsMagick Image Processing System[^] as starting point. The simplest solution...

How do I convert a PNG image to a BMP image

26 Dec 2019 by Richard MacCutchan

vb.net png to bmp - Google Search[^]

DCR (Digital Camera Raw) File Format

24 Apr 2023 by LeisureBamboo

Some kinds of DCR files' format/data structure

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...

stuck in rotating a bmp photo 90 degrees using C++

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...

ignore a rectangular area in a bmp image during image comparison

15 Mar 2015 by rahul15001

Below is the pseudo code to compare two image by ignoring the rectangular area which contains dynamic data#include #define WID 200#define DEP 600typedef struct {int left;int top;int right;int bot;} rect;char image1[WID*DEP];char image2[WID*DEP];int inrect...

BMP extraction from video with Vfw.h - compatibility

27 Mar 2015 by avlasx

Hi all,I'm tring to develop a SW that extracts single bmp frames from a video file encoded with 3ivx codec. I must use vfw interfaces...First of all I'have installed 3ivx decoder (3ivx_MPEG-4_504) and check that with "mediaplayer classic" video is played correctly. Im'm working on win8.1...

How can I convert a BMP to TIFF image without using any library

4 Apr 2016 by Garth J Lancaster

I'd start with a look here How to convert a bitmap into a 1bpp monochrome TIFF in C# – Knowledgebase[^]

How can I convert a BMP to TIFF image without using any library

5 Apr 2016 by Patrice T

Quote:the problem is how to convert from BMP to TIFF without using any external libraries.Simple !You just have to make a program that is replacing the library you don't want to use !You have to:- define a neutral format that suit your needs. Usually an array containing a bitmap version of...

How to convert printdocument object to bitmap image

19 Oct 2016 by Rajib13

I want to create a custom print preview contol like thing in which I shall change the print document and want to see the dynamicaly rendered image of the document i.e. changed document that will be printed if sent to printer. But I donot have any idea about how to render the document to image...

How to convert printdocument object to bitmap image

19 Oct 2016 by Midi_Mick

Its actually quite simple to do. Your "Print" routines have a Graphics object that you normally print to. When sending the output to the printer, this Graphics object is created from the printer's device context - thus sending the output to the printer.If you create a bitmap with a white...

How to create bmp image files to represent all colors sequentially

21 Aug 2018 by Raj Swami

below is my code in that i'm trying to create 1000 bmp images to represent some colors. i'm writing pixel values from loop values. output of this code generate only 508 images, if i set any for loop it again generate only 508 images. my main goal is to create 16581375 images of all colors. so...

Oled size of 64 x axis and 131 y axis need to create bitmap image for the size of 64*16 and .c file can any one give the solution

27 Nov 2018 by Richard MacCutchan

Sorry, this site does not provide code to order. If you cannot find a sample via Google then you need to consider writing it yourself.

How do I convert a PNG image to a BMP image

26 Dec 2019 by Graham Irons

I have an MS Access Database with an OLE Column of PNG images. I need to convert then during runtime within an For Each/Next loop. Your assistance will be appreciated. Graham What I have tried: Bing Search, Microsoft Search & Google Search

How to save a EPL string to PDF

21 Apr 2022 by mrraggi

Hello All, Does anyone know a way to convert a EPL string to a image or pdf file? What I have tried: I can re-do the EPL file in ZPL format, but wanted to just print to an image.

How to save a EPL string to PDF

21 Apr 2022 by Dave Kreskowiak

You're going to have to find some component, or write one yourself, to parse the EPL and render it to an image of your specifications. This isn't going to be a small piece of code. I'd probably start by Googling for "render epl".

How to select blob image file(.bin) from db and show it qt graphics view using qpixmap

18 Sep 2022 by Member 8840306

I am new in qt c++. I am trying to load blob image which is stored in .bin file in phpmyadmin db .That .bin file store blob image in form of string like BM6 ect(each .bin have 3 to 4 char). Here is my code that execute on button click driver...

How to select blob image file(.bin) from db and show it qt graphics view using qpixmap

18 Sep 2022 by Rick York

BM6 is the header of a bitmap file, followed by a double quote character - 0x22. Following the 0x22, there are four nulls. You can not expect to copy a bitmap's binary data using strncpy because there are null characters in it and they will...

How to getblob data from SQL and display in gridview using pixmap in C++ 98?

23 Sep 2022 by Member 8840306

I am new in C++ .I am trying to load blob image which is stored in .bin file from sql Database. That .bin file store blob image in form of string like BM6 ect(each .bin have 3 to 4 char). Here is code(working) that save the blob image(.bmp) in...

What can I convert to bitmap?

6 Dec 2022 by Ribless

I made an environmental map in blender so that I could have a custom reflection on my windows screensaver. It needs to be a bitmap (.bmp) file, but blender doesn't save or export as bitmap. Is there any file format I could use to convert to...

How can I convert a BMP to TIFF image without using any library

14 Apr 2023 by Member 12437251

Hi, I am developing a solution for a hardware device in pure C.I need to compress an image BMP and thought in using the TIFF format (the image is monochromatic), the problem is how to convert from BMP to TIFF without using any external libraries.Anyone can...

Unicode , UTF16, .NET – string, CodePoint out of BMP (Basic Multilingual Plane)

15 Jan 2015 by User 11060979

Dear expertsI’m trying to understand .NET strings and Unicode in all its details. From what I read, .NET strings are UTF16 coded.Based on this “knowledge”/”assumption” I tried to see how Code Points out of BMP will be handled by .net strings and failed on my very first experiment.My...

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...

Is there any way to convert .stl file to .BMP file?

30 May 2016 by OriginalGriff

Very unlikely.STL files are 3D mapping data files for 3D printing; BMP files are 2D flat images. So either you would have to make "N slices" each an individual bitmap, or you'd have to chose a projection point and "render" the image. Automatically as part of you project? Unlikely to work in...

Is there any way to convert .stl file to .BMP file?

30 May 2016 by Vijay Pareek

I am looking for any tool or code that can convert STL file to BMP File. Is there any way to do this? I have to do this conversion thing in my project.every solution or hints are welcome.Thanks in Advance.What I have tried:i am using a third party tool Slic3r. but it is only giving...

stuck in rotating a bmp photo 90 degrees using C++

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...

rotating a bmp file using C++ ?

21 Feb 2015 by Alexis i

#include#include

How to create bmp image files to represent all colors sequentially

21 Aug 2018 by Patrice T

Quote: my main goal is to create 16581375 images of all colors. The whole idea look very wrong to me. Just because a directory is not sorted, finding a file involve reading sequentially all file names until you find the 1 you looking for. I fear it will be faster to build the file on fly for...