How to convert bitmap from KB to MB?

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My bitmap size is 520 KB and i want to convert this size to MB and the size of MB should be  something 9 MB

What I have tried:

I have not tried any. i did not any get code

Posted 21-Dec-22 18:18pm

Ridhdhi Vaghani

Updated 21-Dec-22 20:22pm

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OriginalGriff · Answer 1 · 2022-12-21T20:22:00

To add to what adriancs says, increasing the image resolution or colour depth will not "improve" the image - it may increase the file size, but it can't add information: it can just "stretch" pixels to they cover move space in an image.
The original and new image file format will also have an effect: a BMP file size is very directly related to the image resolution and colour depth because it is not a compressed format, but a JPG, PNG, TIFF, ect. file is compressed and the file size can be very different between what appear to be =very similar images.

Some of the file formats also use "lossy compression" where information is thrown away each time the file is created from an image - so teh file size can shrink (along with the image quality) every time you save it again.

Despite shows like "CSI", you can't look at the reflection in a victims glasses and read the number plate of the car driving past the photographer!

Think about exactly why you want a 9Mb file, rather than how to get it - the chances are you are going down the wrong route right from the beginning.

adriancs · Answer 2 · 2022-12-21T19:14:00

You can resize it.

In C#, type the following using statements

C#

using System;
using System.Drawing;
using System.Drawing.Imaging;

Here's the code to resize an image

C#

// Load the image into a Bitmap object
Bitmap image = new Bitmap("image.bmp");

// Here is where u set the enlarged size
int newWidth = 1000;
int newHeight = 1000;

// Create a new Bitmap object with the new dimensions
Bitmap newImage = new Bitmap(newWidth, newHeight);

// Use the Graphics class to resize the image
using (Graphics graphics = Graphics.FromImage(newImage))
{
    graphics.DrawImage(image, 0, 0, newWidth, newHeight);
}

// Save the resized image to a new file
newImage.Save("image-resized.bmp", ImageFormat.Bmp);

**Update

There is another element that affects the size of an bitmap, that is called color depth.

image size = width * height * color depth

The color depth is the number of bits used to represent each pixel color. For example, if the color depth is 24 bits, then each pixel will be represented by 3 bytes (24 bits / 8 bits per byte = 3 bytes).

Assuming a color depth of 24 bits, the size of the image would be:

image size = 4160 * 6240 * 3 = 75,049,600 bytes = 75.05 MB

Note that this is just an approximation, as the actual size of the image may vary depending on the image format and any additional data that is included in the file.

u can use the PixelFormat property of the Bitmap class to specify a higher color depth

example:

C#

// Load the image from a file
Bitmap image = new Bitmap("path/to/image.bmp");

// Set the pixel format to 32 bits per pixel
image.PixelFormat = PixelFormat.Format32bppArgb;

// Save the image to a file with the new pixel format
image.Save("path/to/new_image.bmp", ImageFormat.Bmp);

How to convert bitmap from KB to MB?

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