Wireless Application Protocol Bitmap Format

Last updated
Wireless Bitmap
Filename extension
.wbmp
Internet media type
image/vnd.wap.wbmp
Developed by WAP Forum
Type of format Image file formats

Wireless Application Protocol Bitmap Format (shortened to Wireless Bitmap and with file extension .wbmp) is a monochrome graphics file format optimized for mobile computing devices.

Contents

WBMP images are monochrome (black & white) so that the image size is kept to a minimum. A black pixel is denoted by 0 and a white pixel is denoted by 1.

Format of Wireless Bitmap Files

Field nameField typeSize (in bytes)Purpose
Type uintvar variableType of the image, and is 0 for monochrome bitmaps.
Fixed header byte 1Reserved. Always 0.
Width uintvar variableWidth of the image in pixels.
Height uintvar variableHeight of the image in pixels.
Databyte arrayvariableData bytes arranged in rows – one bit per pixel. A black pixel is denoted by 0 and a white pixel is denoted by 1. Where the row length is not divisible by 8, the row is 0-padded to the byte boundary.

Notes

    Related Research Articles

    PCX, standing for PiCture eXchange, is an image file format developed by the now-defunct ZSoft Corporation of Marietta, Georgia, United States. It was the native file format for PC Paintbrush and became one of the first widely accepted DOS imaging standards, although it has since been succeeded by more sophisticated image formats, such as BMP, JPEG, and PNG. PCX files commonly stored palette-indexed images ranging from 2 or 4 colors to 16 and 256 colors, although the format has been extended to record true-color (24-bit) images as well.

    Run-length encoding (RLE) is a form of lossless data compression in which runs of data are stored as a single data value and count, rather than as the original run. This is most useful on data that contains many such runs. Consider, for example, simple graphic images such as icons, line drawings, Conway's Game of Life, and animations. It is not useful with files that don't have many runs as it could greatly increase the file size.

    Binary image image comprising exactly two colors, typically black and white

    A binary image is one that consists of pixels that can have one of exactly two colors, usually black and white. Binary images are also called bi-level or two-level. This means that each pixel is stored as a single bit—i.e., a 0 or 1. The names black-and-white, B&W, monochrome or monochromatic are often used for this concept, but may also designate any images that have only one sample per pixel, such as grayscale images. In Photoshop parlance, a binary image is the same as an image in "Bitmap" mode.

    The BMP file format, also known as bitmap image file, device independent bitmap (DIB) file format and bitmap, is a raster graphics image file format used to store bitmap digital images, independently of the display device, especially on Microsoft Windows and OS/2 operating systems.

    Microsoft Paint Raster graphics editor

    Microsoft Paint is a simple raster graphics editor that has been included with all versions of Microsoft Windows. The program opens and saves files in Windows bitmap (BMP), JPEG, GIF, PNG, and single-page TIFF formats. The program can be in color mode or two-color black-and-white, but there is no grayscale mode. For its simplicity and that it is included with Windows, it rapidly became one of the most used applications in the early versions of Windows, introducing many to painting on a computer for the first time. It is still widely used for simple image manipulation tasks.

    The Motorola MPx200 Smartphone was launched in December 2003 as a joint venture between Motorola and Microsoft. The mobile phone's Windows Mobile for Smartphone OS allows users to access email and the Internet, use MSN Messenger, and view documents in Microsoft Office formats much like other Windows smartphones such as the Samsung SGH-i600 or HTC Tanager. The MPx200, along with the Samsung SGH-i600, were the first Windows Mobile smartphone devices to have wide distribution in the United States. Previously, smartphone platform devices could only be purchased in the United States as part of development kits sold by Microsoft. The only U.S. carrier of the phone was AT&T Wireless; however, reports also suggest a somewhat limited number of devices with Cingular branding have appeared following the purchase of AT&T Wireless by Cingular.

    Sony Ericsson T610

    The Sony Ericsson T610, released in 2003, is a mobile phone manufactured by Sony Ericsson. It was one of the first widely available mobile phones to include a built-in digital camera, Bluetooth, color screen, joystick navigation, and was a very high selling model. The T630 was a later variant.

    A computer font is implemented as a digital data file containing a set of graphically related glyphs, characters, or symbols such as dingbats. Although the term font first referred to a set of movable metal type pieces in one style and size, since the 1990s it is generally used to refer to a set of digital shapes in a single style, scalable to different sizes. A font family or typeface refers to the collection of related fonts across styles and sizes.

    X BitMap File format

    In computer graphics, the X Window System used X BitMap (XBM), a plain text binary image format, for storing cursor and icon bitmaps used in the X GUI. The XBM format is superseded by XPM, which first appeared for X11 in 1989.

    Netpbm is an open-source package of graphics programs and a programming library. It is used mainly in the Unix world, where one can find it included in all major open-source operating system distributions, but also works on Microsoft Windows, macOS, and other operating systems.

    The ICO file format is an image file format for computer icons in Microsoft Windows. ICO files contain one or more small images at multiple sizes and color depths, such that they may be scaled appropriately. In Windows, all executables that display an icon to the user, on the desktop, in the Start Menu, or in Windows Explorer, must carry the icon in ICO format.

    Eye of GNOME free image viewer software for the GNOME desktop environment

    Eye of GNOME is the official and default image viewer for the GNOME desktop environment, where it is also known as Image Viewer. There is also another official image viewer for GNOME called gThumb that has more advanced features like image organizing and image editing functions.

    WBMP may refer to:

    In computer graphics, image tracing, raster-to-vector conversion or vectorization is the conversion of raster graphics into vector graphics.

    The Motorola Q is a Windows Mobile smartphone first announced in the Summer of 2005 as a thin device with similar styling to Motorola's immensely popular RAZR. Motorola in a partnership with Verizon Wireless released the Q on May 31, 2006. A version for Sprint was released early in January 2007 and one for Amp'd Mobile in April 2007.

    OTA Bitmap was a specification designed by Nokia for black and white images for mobile phones.

    BSAVE image file format

    BSAVE and BLOAD are commands in many varieties of the BASIC programming language. BSAVE copies RAM to a binary file, and BLOAD copies the contents of the file to RAM. The term "BSAVE image" could mean any of various raw image formats of video display controllers, or more generally any file containing the raw contents of a section of memory.

    ThunderHawk web browser

    ThunderHawk is a discontinued web browser from Bitstream available for a full range of operating systems in high end and mass-market mobile phones and personal digital assistants. It is basically meant for mobile operators and original equipment manufacturers and not meant to download for normal users.

    In computing, a bitmap is a mapping from some domain to bits. It is also called a bit array or bitmap index.

    Sony Xperia ZR Android smartphone

    The Sony Xperia ZR is a touchscreen-enabled, HD Android flagship smartphone designed, developed, and marketed by Sony Mobile.