Bitmap Header file contents

Bitmap header file basically contains following

• Signature-" BM " (ignore inverted commas) for windows - it acquires 2 bytes of size
• File size- size of BMP file in bytes - acquires 4 bytes
• Reserved 1- reserved; actual value depends on the application that creates the image - acquires 2 bytes
• Reserved 2- reserved; actual value depends on the application that creates the image - acquires 2 bytes
• Offset- here the starting of address of pixels exist - acquires 4 bytes
• Size of DIB (device-independent bitmap) header - the size of this header (40 bytes) - acquires 4 bytes
• Width- the bitmap width in pixels (signed integer) - acquires 4 bytes
• Height- the bitmap width in pixels (signed integer) - acquires 4 bytes
• Color Planes- the number of color planes being used. Must be set to 1 - acquires 2 bytes
• Bits Per Pixel- the number of bits per pixel, which is the color depth of the image. Typical values are 1, 4, 8, 16, 24 and 32 - acquires 2 bytes
• Compression method- the compression method being used. See the next table for a list of possible values - Raw data image size- the image size. This is the size of the raw bitmap data (see below), and should not be confused with the file size - acquires 4 bytes
• Horizontal Resolution- the horizontal resolution of the image. (pixel per meter, signed integer) - acquires 4 bytes
• Vertical Resolution- the vertical resolution of the image. (pixel per meter, signed integer) - acquires 4 bytes
• Color Palette- the number of colors in the color palette, or 0 to default to 2ⁿ - acquires 4 bytes
• Important Colors- the number of important colors used, or 0 when every color is important; generally ignored - acquires 4 bytes