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Old 03-29-2019, 03:05 PM   #1
Irbis
Member
 
Registered: Jul 2018
Posts: 32

Rep: Reputation: Disabled
imagemagick - converting bitmap to the same parameters as other bitmap (apart from resolution)


I have two bmp files with the following parameters:

file command:

Code:
imgA.bmp: PC bitmap, Windows 3.x format, 560 x 240 x 1
imgB.bmp: PC bitmap, Windows 98/2000 and newer format, 450 x 100 x 32
identify -verbose command imgA.bmp:
Code:
Image: imgA.bmp
  Format: BMP3 (Microsoft Windows bitmap image (V3))
  Class: PseudoClass
  Geometry: 560x240+0+0
  Resolution: 28.35x28.35
  Print size: 19.7531x8.46561
  Units: PixelsPerCentimeter
  Type: Bilevel
  Endianess: Undefined
  Colorspace: sRGB
  Depth: 1-bit
  Channel depth:
    gray: 1-bit
  Channel statistics:
    Pixels: 134400
    Gray:
      min: 0 (0)
      max: 1 (1)
      mean: 0.813356 (0.813356)
      standard deviation: 0.389626 (0.389626)
      kurtosis: 0.587258
      skewness: -1.6085
      entropy: 0.694399
  Colors: 2
  Histogram:
     25085: (  0,  0,  0) #000000 gray(0)
    109315: (255,255,255) #FFFFFF gray(255)
  Colormap entries: 2
  Colormap:
         0: (  0,  0,  0) #000000 gray(0)
         1: (255,255,255) #FFFFFF gray(255)
  Rendering intent: Perceptual
  Gamma: 0.454545
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: gray(255)
  Border color: gray(223)
  Matte color: gray(189)
  Transparent color: gray(0)
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 560x240+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: None
  Orientation: Undefined
  Properties:
    date:create: 2019-03-29T19:26:45+01:00
    date:modify: 2019-03-29T19:26:45+01:00
    signature: d8c58d4a762d05d160bdfbf0a6a8a70e0a124234d17bcca07e09dd5e0cb8f4bd
  Artifacts:
    filename: test.bmp
    verbose: true
  Tainted: False
  Filesize: 17.3KB
  Number pixels: 134K
  Pixels per second: 13.44MB
  User time: 0.000u
  Elapsed time: 0:01.009
  Version: ImageMagick 6.9.7-4 Q16 x86_64 20170114 http://www.imagemagick.org
identify -verbose command imgB.bmp:
Code:
Image: imgB.bmp
  Format: BMP (Microsoft Windows bitmap image)
  Class: DirectClass
  Geometry: 450x100+0+0
  Resolution: 37.79x37.79
  Print size: 11.9079x2.6462
  Units: PixelsPerCentimeter
  Type: GrayscaleAlpha
  Endianess: Undefined
  Colorspace: sRGB
  Depth: 8-bit
  Channel depth:
    gray: 8-bit
    alpha: 1-bit
  Channel statistics:
    Pixels: 45000
    Gray:
      min: 0 (0)
      max: 255 (1)
      mean: 197.115 (0.772998)
      standard deviation: 105.713 (0.414559)
      kurtosis: -0.293557
      skewness: -1.29809
      entropy: 0.13894
    Alpha:
      min: 255 (1)
      max: 255 (1)
      mean: 255 (1)
      standard deviation: 0 (0)
      kurtosis: 0
      skewness: 0
      entropy: 0
  Colors: 249
  Histogram:
      9418: (  0,  0,  0,255) #000000FF graya(0,1)
        14: (  1,  1,  1,255) #010101FF graya(1,1)
        15: (  2,  2,  2,255) #020202FF graya(2,1)
        16: (  3,  3,  3,255) #030303FF graya(3,1)
        21: (  4,  4,  4,255) #040404FF graya(4,1)
        10: (  5,  5,  5,255) #050505FF graya(5,1)
        11: (  6,  6,  6,255) #060606FF graya(6,1)
        20: (  7,  7,  7,255) #070707FF graya(7,1)
        18: (  8,  8,  8,255) #080808FF graya(8,1)
        17: (  9,  9,  9,255) #090909FF graya(9,1)
        14: ( 10, 10, 10,255) #0A0A0AFF graya(10,1)
        12: ( 11, 11, 11,255) #0B0B0BFF graya(11,1)
        11: ( 12, 12, 12,255) #0C0C0CFF graya(12,1)
        11: ( 13, 13, 13,255) #0D0D0DFF graya(13,1)
        16: ( 14, 14, 14,255) #0E0E0EFF graya(14,1)
        13: ( 15, 15, 15,255) #0F0F0FFF graya(15,1)
        11: ( 16, 16, 16,255) #101010FF graya(16,1)
        15: ( 17, 17, 17,255) #111111FF graya(17,1)
         7: ( 18, 18, 18,255) #121212FF graya(18,1)
        15: ( 19, 19, 19,255) #131313FF graya(19,1)
        13: ( 20, 20, 20,255) #141414FF graya(20,1)
        10: ( 21, 21, 21,255) #151515FF graya(21,1)
        12: ( 22, 22, 22,255) #161616FF graya(22,1)
        18: ( 23, 23, 23,255) #171717FF graya(23,1)
         7: ( 24, 24, 24,255) #181818FF graya(24,1)
        11: ( 25, 25, 25,255) #191919FF graya(25,1)
        11: ( 26, 26, 26,255) #1A1A1AFF graya(26,1)
         5: ( 27, 27, 27,255) #1B1B1BFF graya(27,1)
        11: ( 28, 28, 28,255) #1C1C1CFF graya(28,1)
        15: ( 29, 29, 29,255) #1D1D1DFF graya(29,1)
         7: ( 30, 30, 30,255) #1E1E1EFF graya(30,1)
         6: ( 31, 31, 31,255) #1F1F1FFF graya(31,1)
        12: ( 32, 32, 32,255) #202020FF graya(32,1)
         8: ( 33, 33, 33,255) #212121FF graya(33,1)
        16: ( 34, 34, 34,255) #222222FF graya(34,1)
         9: ( 35, 35, 35,255) #232323FF graya(35,1)
        10: ( 36, 36, 36,255) #242424FF graya(36,1)
        12: ( 37, 37, 37,255) #252525FF graya(37,1)
         6: ( 38, 38, 38,255) #262626FF graya(38,1)
         9: ( 39, 39, 39,255) #272727FF graya(39,1)
        12: ( 40, 40, 40,255) #282828FF graya(40,1)
         6: ( 41, 41, 41,255) #292929FF graya(41,1)
         7: ( 42, 42, 42,255) #2A2A2AFF graya(42,1)
         8: ( 43, 43, 43,255) #2B2B2BFF graya(43,1)
         3: ( 44, 44, 44,255) #2C2C2CFF graya(44,1)
         6: ( 45, 45, 45,255) #2D2D2DFF graya(45,1)
         6: ( 46, 46, 46,255) #2E2E2EFF graya(46,1)
         5: ( 47, 47, 47,255) #2F2F2FFF graya(47,1)
         2: ( 48, 48, 48,255) #303030FF graya(48,1)
         3: ( 49, 49, 49,255) #313131FF graya(49,1)
         9: ( 50, 50, 50,255) #323232FF graya(50,1)
        11: ( 51, 51, 51,255) #333333FF graya(51,1)
         7: ( 52, 52, 52,255) #343434FF graya(52,1)
         2: ( 53, 53, 53,255) #353535FF graya(53,1)
         3: ( 54, 54, 54,255) #363636FF graya(54,1)
         7: ( 55, 55, 55,255) #373737FF graya(55,1)
         5: ( 56, 56, 56,255) #383838FF graya(56,1)
         9: ( 57, 57, 57,255) #393939FF graya(57,1)
         7: ( 58, 58, 58,255) #3A3A3AFF graya(58,1)
         5: ( 59, 59, 59,255) #3B3B3BFF graya(59,1)
         5: ( 60, 60, 60,255) #3C3C3CFF graya(60,1)
         6: ( 61, 61, 61,255) #3D3D3DFF graya(61,1)
         5: ( 62, 62, 62,255) #3E3E3EFF graya(62,1)
         9: ( 63, 63, 63,255) #3F3F3FFF graya(63,1)
         5: ( 64, 64, 64,255) #404040FF graya(64,1)
         2: ( 65, 65, 65,255) #414141FF graya(65,1)
         5: ( 66, 66, 66,255) #424242FF graya(66,1)
        10: ( 67, 67, 67,255) #434343FF graya(67,1)
         5: ( 68, 68, 68,255) #444444FF graya(68,1)
         5: ( 69, 69, 69,255) #454545FF graya(69,1)
         7: ( 70, 70, 70,255) #464646FF graya(70,1)
         5: ( 71, 71, 71,255) #474747FF graya(71,1)
         5: ( 72, 72, 72,255) #484848FF graya(72,1)
         9: ( 73, 73, 73,255) #494949FF graya(73,1)
         6: ( 74, 74, 74,255) #4A4A4AFF graya(74,1)
         6: ( 75, 75, 75,255) #4B4B4BFF graya(75,1)
         4: ( 76, 76, 76,255) #4C4C4CFF graya(76,1)
         3: ( 77, 77, 77,255) #4D4D4DFF graya(77,1)
         3: ( 78, 78, 78,255) #4E4E4EFF graya(78,1)
         7: ( 79, 79, 79,255) #4F4F4FFF graya(79,1)
         5: ( 80, 80, 80,255) #505050FF graya(80,1)
         4: ( 81, 81, 81,255) #515151FF graya(81,1)
         4: ( 82, 82, 82,255) #525252FF graya(82,1)
         7: ( 83, 83, 83,255) #535353FF graya(83,1)
         4: ( 84, 84, 84,255) #545454FF graya(84,1)
         7: ( 85, 85, 85,255) #555555FF graya(85,1)
         2: ( 86, 86, 86,255) #565656FF graya(86,1)
         4: ( 87, 87, 87,255) #575757FF graya(87,1)
         5: ( 89, 89, 89,255) #595959FF graya(89,1)
         4: ( 90, 90, 90,255) #5A5A5AFF graya(90,1)
         5: ( 91, 91, 91,255) #5B5B5BFF graya(91,1)
         3: ( 92, 92, 92,255) #5C5C5CFF graya(92,1)
         6: ( 93, 93, 93,255) #5D5D5DFF graya(93,1)
         4: ( 95, 95, 95,255) #5F5F5FFF graya(95,1)
         6: ( 96, 96, 96,255) #606060FF graya(96,1)
         3: ( 97, 97, 97,255) #616161FF graya(97,1)
         4: ( 98, 98, 98,255) #626262FF graya(98,1)
         4: ( 99, 99, 99,255) #636363FF graya(99,1)
         3: (100,100,100,255) #646464FF graya(100,1)
         3: (101,101,101,255) #656565FF graya(101,1)
         5: (102,102,102,255) #666666FF graya(102,1)
         1: (103,103,103,255) #676767FF graya(103,1)
         3: (104,104,104,255) #686868FF graya(104,1)
         3: (105,105,105,255) #696969FF graya(105,1)
         3: (106,106,106,255) #6A6A6AFF graya(106,1)
         2: (107,107,107,255) #6B6B6BFF graya(107,1)
         1: (108,108,108,255) #6C6C6CFF graya(108,1)
         1: (109,109,109,255) #6D6D6DFF graya(109,1)
         5: (110,110,110,255) #6E6E6EFF graya(110,1)
         3: (111,111,111,255) #6F6F6FFF graya(111,1)
         1: (112,112,112,255) #707070FF graya(112,1)
         3: (113,113,113,255) #717171FF graya(113,1)
         1: (114,114,114,255) #727272FF graya(114,1)
         2: (115,115,115,255) #737373FF graya(115,1)
         3: (116,116,116,255) #747474FF graya(116,1)
         1: (117,117,117,255) #757575FF graya(117,1)
         3: (118,118,118,255) #767676FF graya(118,1)
         1: (119,119,119,255) #777777FF graya(119,1)
         2: (120,120,120,255) #787878FF graya(120,1)
         4: (121,121,121,255) #797979FF graya(121,1)
         4: (122,122,122,255) #7A7A7AFF graya(122,1)
         3: (123,123,123,255) #7B7B7BFF graya(123,1)
         4: (124,124,124,255) #7C7C7CFF graya(124,1)
         1: (125,125,125,255) #7D7D7DFF graya(125,1)
         3: (126,126,126,255) #7E7E7EFF graya(126,1)
         3: (128,128,128,255) #808080FF graya(128,1)
         1: (129,129,129,255) #818181FF graya(129,1)
         5: (130,130,130,255) #828282FF graya(130,1)
         4: (131,131,131,255) #838383FF graya(131,1)
         1: (132,132,132,255) #848484FF graya(132,1)
         4: (133,133,133,255) #858585FF graya(133,1)
         3: (135,135,135,255) #878787FF graya(135,1)
         1: (136,136,136,255) #888888FF graya(136,1)
         5: (137,137,137,255) #898989FF graya(137,1)
         4: (138,138,138,255) #8A8A8AFF graya(138,1)
         2: (139,139,139,255) #8B8B8BFF graya(139,1)
         3: (140,140,140,255) #8C8C8CFF graya(140,1)
         1: (141,141,141,255) #8D8D8DFF graya(141,1)
         2: (142,142,142,255) #8E8E8EFF graya(142,1)
         2: (143,143,143,255) #8F8F8FFF graya(143,1)
         2: (144,144,144,255) #909090FF graya(144,1)
         2: (145,145,145,255) #919191FF graya(145,1)
         4: (146,146,146,255) #929292FF graya(146,1)
         2: (147,147,147,255) #939393FF graya(147,1)
         2: (148,148,148,255) #949494FF graya(148,1)
         2: (149,149,149,255) #959595FF graya(149,1)
         1: (151,151,151,255) #979797FF graya(151,1)
         2: (152,152,152,255) #989898FF graya(152,1)
         5: (153,153,153,255) #999999FF graya(153,1)
         2: (154,154,154,255) #9A9A9AFF graya(154,1)
         5: (155,155,155,255) #9B9B9BFF graya(155,1)
         2: (156,156,156,255) #9C9C9CFF graya(156,1)
         2: (157,157,157,255) #9D9D9DFF graya(157,1)
         3: (158,158,158,255) #9E9E9EFF graya(158,1)
         4: (159,159,159,255) #9F9F9FFF graya(159,1)
         4: (160,160,160,255) #A0A0A0FF graya(160,1)
         3: (161,161,161,255) #A1A1A1FF graya(161,1)
         3: (162,162,162,255) #A2A2A2FF graya(162,1)
         3: (163,163,163,255) #A3A3A3FF graya(163,1)
         2: (164,164,164,255) #A4A4A4FF graya(164,1)
         4: (165,165,165,255) #A5A5A5FF graya(165,1)
         2: (166,166,166,255) #A6A6A6FF graya(166,1)
         1: (167,167,167,255) #A7A7A7FF graya(167,1)
         3: (168,168,168,255) #A8A8A8FF graya(168,1)
         1: (169,169,169,255) #A9A9A9FF graya(169,1)
         3: (170,170,170,255) #AAAAAAFF graya(170,1)
         1: (171,171,171,255) #ABABABFF graya(171,1)
         2: (172,172,172,255) #ACACACFF graya(172,1)
         1: (173,173,173,255) #ADADADFF graya(173,1)
         4: (174,174,174,255) #AEAEAEFF graya(174,1)
         2: (175,175,175,255) #AFAFAFFF graya(175,1)
         2: (176,176,176,255) #B0B0B0FF graya(176,1)
         2: (177,177,177,255) #B1B1B1FF graya(177,1)
         1: (178,178,178,255) #B2B2B2FF graya(178,1)
         5: (179,179,179,255) #B3B3B3FF graya(179,1)
         7: (180,180,180,255) #B4B4B4FF graya(180,1)
         6: (181,181,181,255) #B5B5B5FF graya(181,1)
         2: (182,182,182,255) #B6B6B6FF graya(182,1)
         2: (183,183,183,255) #B7B7B7FF graya(183,1)
         2: (184,184,184,255) #B8B8B8FF graya(184,1)
         3: (185,185,185,255) #B9B9B9FF graya(185,1)
         3: (186,186,186,255) #BABABAFF graya(186,1)
         3: (187,187,187,255) #BBBBBBFF graya(187,1)
         3: (188,188,188,255) #BCBCBCFF graya(188,1)
         6: (189,189,189,255) #BDBDBDFF graya(189,1)
         6: (190,190,190,255) #BEBEBEFF graya(190,1)
         3: (191,191,191,255) #BFBFBFFF graya(191,1)
         1: (192,192,192,255) #C0C0C0FF graya(192,1)
         3: (193,193,193,255) #C1C1C1FF graya(193,1)
         6: (194,194,194,255) #C2C2C2FF graya(194,1)
         4: (195,195,195,255) #C3C3C3FF graya(195,1)
         1: (196,196,196,255) #C4C4C4FF graya(196,1)
         2: (197,197,197,255) #C5C5C5FF graya(197,1)
         2: (198,198,198,255) #C6C6C6FF graya(198,1)
         1: (199,199,199,255) #C7C7C7FF graya(199,1)
         2: (200,200,200,255) #C8C8C8FF graya(200,1)
         1: (201,201,201,255) #C9C9C9FF graya(201,1)
         2: (202,202,202,255) #CACACAFF graya(202,1)
         6: (203,203,203,255) #CBCBCBFF graya(203,1)
         1: (204,204,204,255) #CCCCCCFF graya(204,1)
         2: (205,205,205,255) #CDCDCDFF graya(205,1)
         6: (206,206,206,255) #CECECEFF graya(206,1)
         2: (207,207,207,255) #CFCFCFFF graya(207,1)
         2: (208,208,208,255) #D0D0D0FF graya(208,1)
         4: (209,209,209,255) #D1D1D1FF graya(209,1)
         1: (210,210,210,255) #D2D2D2FF graya(210,1)
         3: (211,211,211,255) #D3D3D3FF graya(211,1)
         2: (212,212,212,255) #D4D4D4FF graya(212,1)
         3: (213,213,213,255) #D5D5D5FF graya(213,1)
         1: (214,214,214,255) #D6D6D6FF graya(214,1)
         4: (215,215,215,255) #D7D7D7FF graya(215,1)
         2: (216,216,216,255) #D8D8D8FF graya(216,1)
         3: (217,217,217,255) #D9D9D9FF graya(217,1)
         2: (218,218,218,255) #DADADAFF graya(218,1)
         3: (219,219,219,255) #DBDBDBFF graya(219,1)
         1: (220,220,220,255) #DCDCDCFF graya(220,1)
         1: (221,221,221,255) #DDDDDDFF graya(221,1)
         2: (222,222,222,255) #DEDEDEFF graya(222,1)
         2: (223,223,223,255) #DFDFDFFF graya(223,1)
         6: (224,224,224,255) #E0E0E0FF graya(224,1)
         4: (225,225,225,255) #E1E1E1FF graya(225,1)
         2: (226,226,226,255) #E2E2E2FF graya(226,1)
         2: (227,227,227,255) #E3E3E3FF graya(227,1)
         1: (228,228,228,255) #E4E4E4FF graya(228,1)
         1: (229,229,229,255) #E5E5E5FF graya(229,1)
         2: (230,230,230,255) #E6E6E6FF graya(230,1)
         2: (231,231,231,255) #E7E7E7FF graya(231,1)
         1: (232,232,232,255) #E8E8E8FF graya(232,1)
         1: (233,233,233,255) #E9E9E9FF graya(233,1)
         3: (234,234,234,255) #EAEAEAFF graya(234,1)
         2: (235,235,235,255) #EBEBEBFF graya(235,1)
         2: (236,236,236,255) #ECECECFF graya(236,1)
         2: (238,238,238,255) #EEEEEEFF graya(238,1)
         1: (239,239,239,255) #EFEFEFFF graya(239,1)
         2: (240,240,240,255) #F0F0F0FF graya(240,1)
         2: (241,241,241,255) #F1F1F1FF graya(241,1)
         1: (242,242,242,255) #F2F2F2FF graya(242,1)
         3: (243,243,243,255) #F3F3F3FF graya(243,1)
         2: (244,244,244,255) #F4F4F4FF graya(244,1)
         1: (245,245,245,255) #F5F5F5FF graya(245,1)
         4: (246,246,246,255) #F6F6F6FF graya(246,1)
         7: (247,247,247,255) #F7F7F7FF graya(247,1)
         3: (248,248,248,255) #F8F8F8FF graya(248,1)
         1: (249,249,249,255) #F9F9F9FF graya(249,1)
         5: (250,250,250,255) #FAFAFAFF graya(250,1)
         5: (251,251,251,255) #FBFBFBFF graya(251,1)
         3: (252,252,252,255) #FCFCFCFF graya(252,1)
         4: (254,254,254,255) #FEFEFEFF graya(254,1)
     34393: (255,255,255,255) #FFFFFFFF graya(255,1)
  Rendering intent: Perceptual
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: graya(255,1)
  Border color: graya(223,1)
  Matte color: graya(189,1)
  Transparent color: graya(0,0)
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 450x100+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: Undefined
  Orientation: Undefined
  Properties:
    date:create: 2019-03-29T19:02:45+01:00
    date:modify: 2019-03-29T19:02:45+01:00
    signature: 8511b866580111138995b93a2fd85b7e6b7511367733b55e29fd5e58651b0c07
  Artifacts:
    filename: Novomatic.bmp
    verbose: true
  Tainted: False
  Filesize: 180KB
  Number pixels: 45K
  User time: 0.000u
  Elapsed time: 0:01.000
  Version: ImageMagick 6.9.7-4 Q16 x86_64 20170114 http://www.imagemagick.org
I would like to convert imgB.bmp to the same parameters as imgA.bmp (apart from resolution).
I have execute the following command:
Code:
convert imgB.bmp -alpha off -depth 1 BMP3:newImgB.bmp
A new file has the following parameters:

file command:
Code:
newImgB.bmp: PC bitmap, Windows 3.x format, 450 x 100 x 24
Now I'm confused what x 24 means. Could you explain it ?

Moreover there are still few other differences:

identify -verbose command:
Code:
Image: newImg.bmp
  Format: BMP3 (Microsoft Windows bitmap image (V3))
  Class: DirectClass
  Geometry: 450x100+0+0
  Resolution: 37.79x37.79
  Print size: 11.9079x2.6462
  Units: PixelsPerCentimeter
  Type: Bilevel
  Endianess: Undefined
  Colorspace: sRGB
  Depth: 8/1-bit
  Channel depth:
    gray: 1-bit
  Channel statistics:
    Pixels: 45000
    Gray:
      min: 0 (0)
      max: 255 (1)
      mean: 196.758 (0.7716)
      standard deviation: 107.049 (0.419802)
      kurtosis: -0.325708
      skewness: -1.29394
      entropy: 0.775212
  Colors: 2
  Histogram:
     10278: (  0,  0,  0) #000000 gray(0)
     34722: (255,255,255) #FFFFFF gray(255)
  Rendering intent: Perceptual
  Gamma: 0.454545
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Background color: gray(255)
  Border color: gray(223)
  Matte color: gray(189)
  Transparent color: gray(0)
  Interlace: None
  Intensity: Undefined
  Compose: Over
  Page geometry: 450x100+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: None
  Orientation: Undefined
  Properties:
    date:create: 2019-03-29T19:43:38+01:00
    date:modify: 2019-03-29T19:43:38+01:00
    signature: e0dec3e74b48b5c4d1cbdc71481641d5b671eabea05947e85d8fb9033539ee46
  Artifacts:
    filename: NovomaticC.bmp
    verbose: true
  Tainted: False
  Filesize: 135KB
  Number pixels: 45K
  User time: 0.000u
  Elapsed time: 0:01.000
  Version: ImageMagick 6.9.7-4 Q16 x86_64 20170114 http://www.imagemagick.org
What can I do more to make newImgB.bmp identical to imgA.bmp (apart from the resolution) ?

Last edited by Irbis; 03-29-2019 at 03:08 PM.
 
Old 03-29-2019, 03:36 PM   #2
RandomTroll
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I think 24 is colors. When I had ImageMagick questions I got no good answers here but did on the ImageMagick forum. Run
Code:
convert --help
to see all of the changes ImageMagick can make to a file.
 
Old 03-29-2019, 03:58 PM   #3
BW-userx
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bit depth
Code:
The color depth setting indicates the number of bits used per pixel to represent on-screen colors. ... Xbox One 
consoles can output signals at 24 bits per pixel (8-bit), 30 bits per pixel (10-bit) and 36 bits per pixel (12-bit)
1 bit
Code:
Bit depth refers to the color information stored in an image. The higher the bit depth of an image, the more colors 
it can store. The simplest image, a 1 bit image, can only show two colors, black and white. That is because the 1 
bit can only store one of two values, 0 (white) and 1 (black).
you have Image: imgA.bmp image with Depth: 1-bit (black and white), the other image Image: imgB.bmp is Depth: 8-bit

so is one of the images black and white, and the other color?

you cannot change black and white into color and expect it to be color.
to get just the depth
Code:
identify -format "%[bit-depth]" file.ext

widthxheight
identify -format "%w x %h"

Last edited by BW-userx; 03-29-2019 at 04:10 PM.
 
Old 03-29-2019, 04:02 PM   #4
Irbis
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Both are black and white.
 
Old 03-29-2019, 04:12 PM   #5
BW-userx
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try running convert on the 8 bit (gray scale) to black and white to see if you can get it to be 1 bit.
why so particular? , just wondering.

look here
http://www.imagemagick.org/discourse...f8cad8#p164682

and

http://www.imagemagick.org/discourse...ic.php?t=26710

Last edited by BW-userx; 03-29-2019 at 04:37 PM.
 
Old 03-29-2019, 04:38 PM   #6
Irbis
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Just for learning purposes.

Well it is not obvious, here is explanation: https://poizan.dk/blog/2014/02/28/mo...n-imagemagick/
 
  


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