Bit map file

Table of Content. What is a BMP file? It can following possible values. DIB header bitmap information header The detailed information about the image is represented by this header. Availability of colour in a bitmap file varies as follow: One, 4 and 8-bit - expected to always contain a colour palette Sixteen, 24 and bit - never contain colour palettes Sixteen and bit BMP files - contain bitfields mask values in place of the colour palette Pixel Storage Bitmap pixels are stored as bits packed in rows where the size of each row is rounded up to a multiple of 4 bytes a bit DWORD by padding.

Pixel formats and their implications are as listed below: The 1-bit per pixel 1bpp format supports 2 distinct colours, for example: black and white. The 2-bit per pixel 2bpp format supports 4 distinct colours and stores 4 pixels per 1 byte, the left-most pixel being in the two most significant bits.

Each pixel value is a 2-bit index into a table of up to 4 colours. The 4-bit per pixel 4bpp format supports 16 distinct colours and stores 2 pixels per 1 byte, the left-most pixel being in the more significant nibble. Each pixel value is a 4-bit index into a table of up to 16 colours.

The 8-bit per pixel 8bpp format supports distinct colours and stores 1 pixel per 1 byte. Webopedia focuses on connecting researchers with IT resources that are most helpful for them. Webopedia resources cover technology definitions, educational guides, and software reviews that are accessible to all researchers regardless of technical background.

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Password recovery. Recover your password. Home Definitions. Sam Ingalls. Just like some videogames deliberately replicate 8-bit graphics, some comics deliberately maintain dot matrix. The main alternative to bitmap design is "vector image design. The result is images that can be scaled up almost infinitely without a loss of image quality. The ability to scale the image is a huge benefit over a bitmap, but that's more or less where the benefit ends. Vector images are harder to create from scratch, and a lot is lost in the design process.

Further, it is hard to make a vector image that can be stylistically replicated in the same way that a bitmap can be used for a tilemap. As a result of these limitations, most vector images are actually created by making a bitmap image and converting the file. Related: How to Make Vector Images. Finally, vector images are limited by display definition in the same way that bitmap images are. No matter how detailed your vector image is, it cannot appear in a higher definition than the user's device or display settings allow.

And this file format is often used to store 2D digital images. Do you know what is a CBR file? How to open CBR files on computer and phone? How to open BMP files? BMP is a common image file format. It is compatible with Windows Mac operating systems.