{"id":476077,"date":"2023-08-09T07:25:33","date_gmt":"2023-08-09T07:25:33","guid":{"rendered":""},"modified":"2023-09-05T11:11:58","modified_gmt":"2023-09-05T11:11:58","slug":"bmp-file-format","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/bmp-file-format\/","title":{"rendered":"\u0110\u1ecbnh d\u1ea1ng t\u1ec7p BMP"},"content":{"rendered":"<p>T\u1ec7p h\u00ecnh \u1ea3nh Bitmap ho\u1eb7c \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP l\u00e0 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p h\u00ecnh \u1ea3nh \u0111\u1ed3 h\u1ecda raster \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u01b0u tr\u1eef h\u00ecnh \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 bitmap. N\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7c tr\u01b0ng b\u1edfi t\u00ednh \u0111\u01a1n gi\u1ea3n v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch r\u1ed9ng, \u0111i\u1ec1u n\u00e0y \u0111\u00e3 g\u00f3p ph\u1ea7n gi\u00fap n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e2u d\u00e0i trong ng\u00e0nh \u0111\u1ed3 h\u1ecda.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c v\u00e0 l\u1ecbch s\u1eed c\u1ee7a \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP<\/h2>\n<p>\u0110\u1ecbnh d\u1ea1ng t\u1ec7p BMP, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p Bitmap \u0111\u1ed9c l\u1eadp v\u1edbi thi\u1ebft b\u1ecb (DIB), l\u1ea7n \u0111\u1ea7u ti\u00ean xu\u1ea5t hi\u1ec7n c\u00f9ng v\u1edbi h\u1ec7 \u0111i\u1ec1u h\u00e0nh Windows 3.0, \u0111\u01b0\u1ee3c ph\u00e1t h\u00e0nh v\u00e0o n\u0103m 1990. Microsoft \u0111\u00e3 ph\u00e1t tri\u1ec3n \u0111\u1ecbnh d\u1ea1ng t\u1ec7p n\u00e0y nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a API \u0111\u1ed3 h\u1ecda Windows c\u1ee7a h\u1ecd, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 GDI (Thi\u1ebft b\u1ecb \u0111\u1ed3 h\u1ecda) Giao di\u1ec7n). Ban \u0111\u1ea7u, \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 cho ph\u00e9p l\u01b0u tr\u1eef h\u00ecnh \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 \u1edf \u0111\u1ecbnh d\u1ea1ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia s\u1ebb tr\u00ean c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c nhau v\u00e0 k\u1ec3 t\u1eeb \u0111\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi m\u1ecdi b\u1ea3n ph\u00e1t h\u00e0nh ti\u1ebfp theo c\u1ee7a Microsoft Windows.<\/p>\n<h2>\u0110i s\u00e2u v\u00e0o \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP<\/h2>\n<p>\u0110\u1ecbnh d\u1ea1ng t\u1ec7p BMP l\u00e0 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p h\u00ecnh \u1ea3nh \u0111\u1ed3 h\u1ecda raster, ngh\u0129a l\u00e0 n\u00f3 l\u01b0u tr\u1eef d\u1eef li\u1ec7u m\u00e0u cho t\u1eebng pixel ri\u00eang l\u1ebb trong h\u00ecnh \u1ea3nh. K\u1ebft qu\u1ea3 l\u00e0 n\u00f3 c\u00f3 th\u1ec3 th\u1ec3 hi\u1ec7n h\u00ecnh \u1ea3nh v\u1edbi \u0111\u1ed9 chi ti\u1ebft v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c cao. Tuy nhi\u00ean, \u0111i\u1ec1u n\u00e0y ph\u1ea3i tr\u1ea3 gi\u00e1 b\u1eb1ng k\u00edch th\u01b0\u1edbc t\u1ec7p l\u1edbn h\u01a1n v\u00ec d\u1eef li\u1ec7u c\u1ee7a m\u1ed7i pixel c\u1ea7n \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef ri\u00eang.<\/p>\n<p>Kh\u00f4ng gi\u1ed1ng nh\u01b0 c\u00e1c \u0111\u1ecbnh d\u1ea1ng nh\u01b0 JPEG ho\u1eb7c PNG, \u0111\u1ecbnh d\u1ea1ng BMP th\u01b0\u1eddng kh\u00f4ng s\u1eed d\u1ee5ng b\u1ea5t k\u1ef3 h\u00ecnh th\u1ee9c n\u00e9n m\u1ea5t d\u1eef li\u1ec7u ho\u1eb7c kh\u00f4ng m\u1ea5t d\u1eef li\u1ec7u n\u00e0o, \u0111\u00e2y l\u00e0 m\u1ed9t ph\u1ea7n l\u00fd do khi\u1ebfn k\u00edch th\u01b0\u1edbc t\u1ec7p l\u1edbn h\u01a1n. Tuy nhi\u00ean, BMP h\u1ed7 tr\u1ee3 m\u00e3 h\u00f3a \u0111\u1ed9 d\u00e0i ch\u1ea1y (RLE), m\u1ed9t d\u1ea1ng n\u00e9n \u0111\u01a1n gi\u1ea3n, trong m\u1ed9t s\u1ed1 bi\u1ebfn th\u1ec3 c\u1ee7a n\u00f3.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP<\/h2>\n<p>M\u1ed9t t\u1ec7p BMP bao g\u1ed3m b\u1ed1n ph\u1ea7n ch\u00ednh:<\/p>\n<ol>\n<li><strong>Ti\u00eau \u0111\u1ec1 t\u1ec7p<\/strong>: \u0110i\u1ec1u n\u00e0y bao g\u1ed3m si\u00eau d\u1eef li\u1ec7u v\u1ec1 t\u1ec7p, ch\u1eb3ng h\u1ea1n nh\u01b0 k\u00edch th\u01b0\u1edbc t\u1ec7p v\u00e0 \u0111\u1ed9 l\u1ec7ch n\u01a1i m\u1ea3ng pixel (d\u1eef li\u1ec7u bitmap) b\u1eaft \u0111\u1ea7u.<\/li>\n<li><strong>Ti\u00eau \u0111\u1ec1 DIB<\/strong>: Ph\u1ea7n n\u00e0y ch\u1ee9a th\u00f4ng tin v\u1ec1 h\u00ecnh \u1ea3nh, bao g\u1ed3m k\u00edch th\u01b0\u1edbc, s\u1ed1 l\u01b0\u1ee3ng m\u1eb7t ph\u1eb3ng m\u00e0u, s\u1ed1 bit tr\u00ean m\u1ed7i pixel (\u0111\u1ed9 s\u00e2u m\u00e0u) v\u00e0 ph\u01b0\u01a1ng ph\u00e1p n\u00e9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng.<\/li>\n<li><strong>B\u1ea3ng m\u00e0u<\/strong>: \u0110\u00e2y l\u00e0 ph\u1ea7n t\u00f9y ch\u1ecdn bao g\u1ed3m m\u1ed9t lo\u1ea1t c\u00e1c m\u1ee5c x\u00e1c \u0111\u1ecbnh m\u00e0u s\u1eafc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u00ecnh \u1ea3nh. N\u00f3 ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi \u0111\u1ed9 s\u00e2u m\u00e0u nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng 8 bit tr\u00ean m\u1ed7i pixel.<\/li>\n<li><strong>M\u1ea3ng pixel<\/strong>: \u0110\u00e2y l\u00e0 d\u1eef li\u1ec7u bitmap th\u1ef1c t\u1ebf, bi\u1ec3u th\u1ecb t\u1eebng pixel h\u00ecnh \u1ea3nh.<\/li>\n<\/ol>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP<\/h2>\n<ul>\n<li><strong>S\u1ef1 \u0111\u01a1n gi\u1ea3n<\/strong>: \u0110\u1ecbnh d\u1ea1ng BMP \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 \u0111\u1ecdc, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng v\u00e0 \u0111\u1ed3 h\u1ecda \u0111\u01a1n gi\u1ea3n.<\/li>\n<li><strong>Ch\u1ea5t l\u01b0\u1ee3ng cao<\/strong>: L\u00e0 \u0111\u1ecbnh d\u1ea1ng lossless, BMP gi\u1eef l\u1ea1i to\u00e0n b\u1ed9 d\u1eef li\u1ec7u \u1ea3nh g\u1ed1c, cung c\u1ea5p h\u00ecnh \u1ea3nh ch\u1ea5t l\u01b0\u1ee3ng cao.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch r\u1ed9ng<\/strong>: C\u00e1c t\u1ec7p BMP c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1edf v\u00e0 ch\u1ec9nh s\u1eeda b\u1eb1ng h\u1ea7u h\u1ebft m\u1ecdi ph\u1ea7n m\u1ec1m \u0111\u1ed3 h\u1ecda.<\/li>\n<\/ul>\n<h2>C\u00e1c lo\u1ea1i \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP<\/h2>\n<p>\u0110\u1ecbnh d\u1ea1ng t\u1ec7p BMP c\u00f3 th\u1ec3 thay \u0111\u1ed5i d\u1ef1a tr\u00ean \u0111\u1ed9 s\u00e2u bit ho\u1eb7c m\u1ee9c \u0111\u1ed9 n\u00e9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 bi\u1ebfn th\u1ec3 ph\u1ed5 bi\u1ebfn:<\/p>\n<table>\n<thead>\n<tr>\n<th>Bi\u1ebfn th\u1ec3 BMP<\/th>\n<th>\u0110\u1ed9 s\u00e2u bit<\/th>\n<th>N\u00e9n<\/th>\n<th>C\u00e1ch s\u1eed d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1ea3n \u0111\u1ed3 bit v2<\/td>\n<td>1, 4, 8<\/td>\n<td>Kh\u00f4ng c\u00f3, RLE8, RLE4<\/td>\n<td>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c phi\u00ean b\u1ea3n Windows \u0111\u1ea7u ti\u00ean<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3n \u0111\u1ed3 bit v3<\/td>\n<td>1, 4, 8, 24<\/td>\n<td>Kh\u00f4ng c\u00f3, RLE8, RLE4<\/td>\n<td>\u0110\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u1edbi Windows NT, th\u00eam m\u00e0u 24-bit<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3n \u0111\u1ed3 bit v4<\/td>\n<td>1, 4, 8, 16, 24, 32<\/td>\n<td>Kh\u00f4ng c\u00f3, RLE8, RLE4<\/td>\n<td>\u0110\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u1edbi Windows 95, b\u1ed5 sung th\u00eam kh\u00f4ng gian m\u00e0u<\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3n \u0111\u1ed3 bit v5<\/td>\n<td>1, 4, 8, 16, 24, 32<\/td>\n<td>Kh\u00f4ng c\u00f3, RLE8, RLE4<\/td>\n<td>\u0110\u01b0\u1ee3c gi\u1edbi thi\u1ec7u v\u1edbi Windows 98, b\u1ed5 sung h\u1ed7 tr\u1ee3 cho c\u1ea5u h\u00ecnh m\u00e0u ICC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>S\u1eed d\u1ee5ng th\u1ef1c t\u1ebf v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP<\/h2>\n<p>Do kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch r\u1ed9ng v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao c\u1ee7a h\u00ecnh \u1ea3nh c\u00f3 th\u1ec3 l\u01b0u tr\u1eef, BMP th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho \u1ea3nh k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 h\u00ecnh \u1ea3nh y\u00eau c\u1ea7u ch\u1ec9nh s\u1eeda chi ti\u1ebft. Tuy nhi\u00ean, do k\u00edch th\u01b0\u1edbc t\u1ec7p l\u1edbn m\u00e0 n\u00f3 t\u1ea1o ra, n\u00f3 \u00edt ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi \u0111\u1ed3 h\u1ecda web ho\u1eb7c b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o m\u00e0 l\u01b0u tr\u1eef ho\u1eb7c b\u0103ng th\u00f4ng l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u00e1ng lo ng\u1ea1i.<\/p>\n<p>M\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn v\u1edbi c\u00e1c t\u1ec7p BMP l\u00e0 ch\u00fang c\u00f3 th\u1ec3 tr\u1edf n\u00ean qu\u00e1 l\u1edbn \u0111\u1ec3 x\u1eed l\u00fd hi\u1ec7u qu\u1ea3. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p nh\u01b0 v\u1eady, vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i t\u1ec7p BMP sang \u0111\u1ecbnh d\u1ea1ng n\u00e9n h\u01a1n nh\u01b0 JPEG ho\u1eb7c PNG th\u01b0\u1eddng c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c s\u1ef1 c\u1ed1.<\/p>\n<h2>So s\u00e1nh v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a c\u00e1c \u0111\u1ecbnh d\u1ea1ng t\u01b0\u01a1ng t\u1ef1<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1ecbnh d\u1ea1ng t\u1ec7p<\/th>\n<th>N\u00e9n<\/th>\n<th>Ch\u1ea5t l\u01b0\u1ee3ng<\/th>\n<th>H\u1ed7 tr\u1ee3 minh b\u1ea1ch<\/th>\n<th>H\u1ed7 tr\u1ee3 ho\u1ea1t h\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>BMP<\/td>\n<td>Kh\u00f4ng c\u00f3 ho\u1eb7c RLE<\/td>\n<td>Cao<\/td>\n<td>KH\u00d4NG<\/td>\n<td>KH\u00d4NG<\/td>\n<\/tr>\n<tr>\n<td>JPEG<\/td>\n<td>M\u1ea5t m\u00e1t<\/td>\n<td>Bi\u1ebfn \u0111\u1ed5i<\/td>\n<td>KH\u00d4NG<\/td>\n<td>KH\u00d4NG<\/td>\n<\/tr>\n<tr>\n<td>PNG<\/td>\n<td>Kh\u00f4ng m\u1ea5t m\u00e1t<\/td>\n<td>Cao<\/td>\n<td>\u0110\u00fang<\/td>\n<td>KH\u00d4NG<\/td>\n<\/tr>\n<tr>\n<td>GIF<\/td>\n<td>Kh\u00f4ng m\u1ea5t m\u00e1t<\/td>\n<td>Th\u1ea5p h\u01a1n<\/td>\n<td>\u0110\u00fang<\/td>\n<td>\u0110\u00fang<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 trong t\u01b0\u01a1ng lai cho \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP<\/h2>\n<p>M\u1eb7c d\u00f9 BMP ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u00e0 s\u1eed d\u1ee5ng nh\u01b0ng t\u01b0\u01a1ng lai c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 s\u1ebd b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi s\u1ef1 ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c c\u1ee7a c\u00e1c \u0111\u1ecbnh d\u1ea1ng h\u00ecnh \u1ea3nh c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng n\u00e9n hi\u1ec7u qu\u1ea3 h\u01a1n. C\u00e1c \u0111\u1ecbnh d\u1ea1ng nh\u01b0 WebP v\u00e0 AVIF, cung c\u1ea5p kh\u1ea3 n\u0103ng n\u00e9n t\u1ed1t h\u01a1n v\u00e0 nhi\u1ec1u t\u00ednh n\u0103ng h\u01a1n nh\u01b0 h\u1ed7 tr\u1ee3 ho\u1ea1t \u1ea3nh v\u00e0 \u0111\u1ed9 trong su\u1ed1t, cu\u1ed1i c\u00f9ng c\u00f3 th\u1ec3 thay th\u1ebf BMP trong nhi\u1ec1u \u1ee9ng d\u1ee5ng. Tuy nhi\u00ean, t\u00ednh \u0111\u01a1n gi\u1ea3n v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch r\u1ed9ng r\u00e3i c\u1ee7a BMP c\u00f3 th\u1ec3 s\u1ebd \u0111\u1ea3m b\u1ea3o n\u00f3 \u0111\u01b0\u1ee3c ti\u1ebfp t\u1ee5c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 b\u1ed1i c\u1ea3nh nh\u1ea5t \u0111\u1ecbnh.<\/p>\n<h2>Hi\u1ec7p h\u1ed9i c\u00e1c m\u00e1y ch\u1ee7 proxy v\u1edbi \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy, gi\u1ed1ng nh\u01b0 c\u00e1c m\u00e1y ch\u1ee7 do OneProxy cung c\u1ea5p, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi x\u1eed l\u00fd c\u00e1c t\u1ec7p BMP theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau. V\u00ed d\u1ee5: n\u1ebfu t\u1ec7p BMP \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef tr\u00ean m\u00e1y ch\u1ee7 kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c do h\u1ea1n ch\u1ebf v\u1ec1 \u0111\u1ecba l\u00fd ho\u1eb7c s\u1ef1 c\u1ed1 m\u1ea1ng, th\u00ec m\u00e1y ch\u1ee7 proxy c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 b\u1ecf qua nh\u1eefng h\u1ea1n ch\u1ebf n\u00e0y. Ngo\u00e0i ra, n\u1ebfu c\u1ea7n t\u1ea3i xu\u1ed1ng m\u1ed9t t\u1ec7p BMP l\u1edbn, m\u00e1y ch\u1ee7 proxy b\u1ed9 nh\u1edb \u0111\u1ec7m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u0103ng t\u1ed1c c\u00e1c l\u1ea7n t\u1ea3i xu\u1ed1ng t\u1ec7p ti\u1ebfp theo.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin v\u1ec1 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP, h\u00e3y xem x\u00e9t c\u00e1c t\u00e0i nguy\u00ean sau:<\/p>\n<ol>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/BMP_file_format\" target=\"_new\" rel=\"noopener nofollow\">Microsoft Windows BMP<\/a>: C\u00e1i nh\u00ecn s\u00e2u s\u1eafc v\u1ec1 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP tr\u00ean Wikipedia.<\/li>\n<li><a href=\"https:\/\/www.lifewire.com\/bmp-file-2622198\" target=\"_new\" rel=\"noopener nofollow\">T\u1ec7p BMP l\u00e0 g\u00ec?<\/a>: Gi\u1ea3i th\u00edch c\u1ee7a Lifewire v\u1ec1 t\u1eadp tin BMP v\u00e0 c\u00e1ch m\u1edf ch\u00fang.<\/li>\n<li><a href=\"https:\/\/www.ibm.com\/docs\/en\/i\/7.4?topic=formats-file-format-images-bmp\" target=\"_new\" rel=\"noopener nofollow\">\u0110\u1ecbnh d\u1ea1ng file h\u00ecnh \u1ea3nh \u2013 BMP<\/a>: T\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt c\u1ee7a IBM v\u1ec1 \u0111\u1ecbnh d\u1ea1ng t\u1ec7p BMP.<\/li>\n<li><a href=\"https:\/\/docs.microsoft.com\/en-us\/windows\/win32\/gdi\/bitmap-storage\" target=\"_new\" rel=\"noopener nofollow\">L\u01b0u tr\u1eef bitmap<\/a>: T\u00e0i li\u1ec7u d\u00e0nh cho nh\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a Microsoft v\u1ec1 c\u00e1ch l\u01b0u tr\u1eef bitmap.<\/li>\n<\/ol>","protected":false},"featured_media":467766,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476077","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>An In-depth Overview of the BMP File Format<\/mark>","faq_items":[{"question":"What is a BMP file format?","answer":"<p>A BMP file format, also known as Bitmap Image file or Device Independent Bitmap (DIB) file format, is a raster graphics image file format that stores bitmap digital images. It was developed by Microsoft and first appeared with the Windows 3.0 operating system in 1990.<\/p>"},{"question":"What is the internal structure of a BMP file?","answer":"<p>A BMP file consists of four main parts: the File Header which contains metadata about the file; the DIB Header which provides information about the image; the optional Color Table which contains entries defining the colors used in the image, and the Pixel Array which represents the actual bitmap data.<\/p>"},{"question":"What are the key features of the BMP file format?","answer":"<p>The BMP file format is simple, provides high-quality images, and has wide compatibility, meaning BMP files can be opened and edited with almost any graphics software.<\/p>"},{"question":"What types of BMP file formats exist?","answer":"<p>The BMP file format can vary based on the bit depth or the level of compression used. Common variations include Bitmap v2, Bitmap v3, Bitmap v4, and Bitmap v5. These variations differ based on bit depth, compression, and usage.<\/p>"},{"question":"What are the common uses and problems of the BMP file format?","answer":"<p>BMP is commonly used for digital photos and images that require detailed editing. However, due to its large file size, it's less suitable for web graphics or applications where storage or bandwidth is a concern. One common problem with BMP files is their large size, which can often be resolved by converting the BMP file to a more compressed format like JPEG or PNG.<\/p>"},{"question":"How does the BMP file format compare to other image file formats?","answer":"<p>The BMP file format is uncompressed, providing high-quality images but at the cost of larger file sizes. It does not support transparency or animation, unlike other formats like PNG and GIF. JPEG, on the other hand, uses lossy compression and provides variable image quality.<\/p>"},{"question":"What is the future of the BMP file format?","answer":"<p>While BMP continues to be supported and used, its future may be affected by the development of image formats that offer similar quality but with more efficient compression. New formats such as WebP and AVIF may eventually supersede BMP for many applications.<\/p>"},{"question":"How can proxy servers be used with the BMP file format?","answer":"<p>Proxy servers can be used when dealing with BMP files to bypass geographical restrictions or network issues. A caching proxy server could also be used to speed up subsequent downloads of a large BMP file.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476077","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/476077\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/467766"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=476077"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}