Create psd file with a single transparent layer

[fmw42]

A single transparent image must have some color under the transparency. Typically it is transparent black. I do not think there is anything that is just transparent with no under color. But Photoshop may hide that so all you see is the transparent image. When you create a transparent background layer in Photoshop, what do the channels show for the colors?

[Bonzo]

Why don't you just make the image in Photoshop?

Out of interest and this may give some insight on what photoshop would create. I made a new image with a white background; added a transparent layer and deleted the background. This is the output of identify ( only one layer displayed in Photoshop ):

Image: G:\Photoshop processed\transparent layer.psd
Format: PSD (Adobe Photoshop bitmap)
Class: DirectClass
Geometry: 1890x1417+0+0
Resolution: 299x299
Print size: 6.32107x4.73913
Units: PixelsPerInch
Type: Bilevel
Base type: TrueColorAlpha
Endianess: MSB
Colorspace: sRGB
Depth: 16/1-bit
Channel depth:
Gray: 1-bit
Alpha: 1-bit
Channel statistics:
Pixels: 2678130
Gray:
min: 65535 (1)
max: 65535 (1)
mean: 65535 (1)
standard deviation: -1.#IND (-1.#IND)
kurtosis: -1.86334e+069
skewness: 2.8432e+049
entropy: -1.#IND
Alpha:
min: 0 (0)
max: 0 (0)
mean: 0 (0)
standard deviation: 0 (0)
kurtosis: -3
skewness: 0
entropy: -1.#IND
Alpha: srgba(255,255,255,0) #FFFFFFFFFFFF0000
Colors: 1
Histogram:
2678130: (65535,65535,65535, 0) #FFFFFFFFFFFF0000 srgba(255,255,255,0)
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)
Matte color: grey74
Background color: white
Border color: srgb(223,223,223)
Transparent color: none
Interlace: None
Intensity: Undefined
Compose: Over
Page geometry: 1890x1417+0+0
Dispose: Undefined
Iterations: 0
Compression: None
Orientation: Undefined
Properties:
date:create: 2017-12-28T17:39:50+00:00
date:modify: 2017-12-28T17:39:50+00:00
dc:format: application/vnd.adobe.photoshop
icc Copyright (c) 1998 Hewlett-Packard Company
icc:description: sRGB IEC61966-2.1
icc:manufacturer: IEC http://www.iec.ch
icc:model: IEC 61966-2.1 Default RGB colour space - sRGB
photoshop:ColorMode: 3
photoshop:ICCProfile: sRGB IEC61966-2.1
signature: 481daa2d0ca36172d916e302c7aebe15ada3c6b217717ea92a32caccc2a52045
tiff:XResolution: 299
tiff:YResolution: 299
xmp:CreateDate: 2017-12-28T17:39:48Z
xmp:CreatorTool: Adobe Photoshop CC (Windows)
xmp:MetadataDate: 2017-12-28T17:39:48Z
xmp:ModifyDate: 2017-12-28T17:39:48Z
xmpMM:DocumentID: xmp.did:ca6c9c85-e926-3540-96a5-b21e69787c68
xmpMM:InstanceID: xmp.iid:ca6c9c85-e926-3540-96a5-b21e69787c68
xmpMM:OriginalDocumentID: xmp.did:ca6c9c85-e926-3540-96a5-b21e69787c68
Profiles:
Profile-8bim: 20728 bytes
Profile-exif: 302 bytes
Profile-icc: 3144 bytes
Profile-xmp: 13920 bytes
Artifacts:
verbose: true
Tainted: False
Filesize: 20.4528MiB
Number pixels: 2678130
Pixels per second: 18.0954MB
User time: 0.156u
Elapsed time: 0:01.148
Version: ImageMagick 7.0.5-5 Q16 x64 2017-04-25 http://www.imagemagick.org

[fmw42]

I'm trying to create a Photoshop file: 16 bit, RGB, no alpha channel and just a single transparent layer, but no success.

When I create a new transparent background layer in GIMP and look at the channels, I see 4 channels, R=G=B=Alpha=black. So there is an under color of black below an alpha channel. I do not see how you can have transparency without an alpha channel.

Perhaps the OP can explain how he creates a PSD image with only transparency and no alpha channel

Can the OP provide an example PS file for what he wants?

[Bonzo]

From the way I read the thread the OP has not made such a file in Photoshop; perhaps what they want is not possible?

[Maelcum]

Hi,

Unfortunately, I can't upload anything for security reasons now. I'm gonna replicate these images at home and upload them from there.
Btw, what's the best host for sharing images, including psd files?

Cheers,
M

[fmw42]

I recommend dropbox.com (make sure the file is publicly shared). If any trouble with uploading or downloading, you can zip the files first.

[Maelcum]

A single transparent image must have some color under the transparency. Typically it is transparent black. I do not think there is anything that is just transparent with no under color. But Photoshop may hide that so all you see is the transparent image. When you create a transparent background layer in Photoshop, what do the channels show for the colors?

OK, it seems my previous post just vanished...

Anyway, transparency and alpha channel(s) are quite different things.
Alpha channels represents selections and/or areas to be masked while transparency represents the "opacity" of any given pixel.
It doesn't make sense to have multiple transparencies but you can have as many alpha channels as many you need.

When you create an image in Photoshop with a single, transparent layer, you'll have exactly as many channels as many the given colour mode needs (1 for grayscale and 3 for RGB). You don't need an alpha channel to represent transparency (again, they're different things).

Cheers,
M

[Maelcum]

Why don't you just make the image in Photoshop?

Out of interest and this may give some insight on what photoshop would create. I made a new image with a white background; added a transparent layer and deleted the background. This is the output of identify ( only one layer displayed in Photoshop ):

I have to make several different sized psd on Linux to automate some processes and ensure naming conventions are being followed and such things.
The goal is to avoid making psd files manually.

Identify misinterprets the psd file content, IMHO.

Cheers,
M

[fmw42]

Identify misinterprets the psd file content, IMHO.

In what way? Can you be more specific? Can you make screen snaps of the layer snap channels control panels for you image and post those and describe what is different compared to identify -verbose?

[Maelcum]

Identify misinterprets the psd file content, IMHO.

In what way? Can you be more specific? Can you make screen snaps of the layer snap channels control panels for you image and post those and describe what is different compared to identify -verbose?

Hi,

For example, I have a template psd, 16 bit RGB with a single, transparent layer and no alpha channel(s).
Identify gives the following (partial) details:

Image: template.psd
Format: PSD (Adobe Photoshop bitmap)
Class: DirectClass
Geometry: 100x100+0+0
Resolution: 72x72
Print size: 1.38889x1.38889
Units: Undefined
Type: Bilevel
Base type: Bilevel
Endianess: Undefined
Colorspace: RGB
Depth: 16/1-bit
Channel depth:
gray: 1-bit
alpha: 1-bit
Channel statistics:
Gray:
min: 65535 (1)
max: 65535 (1)
mean: 65535 (1)
standard deviation: 0 (0)
kurtosis: 0
skewness: 0
Alpha:
min: 0 (0)
max: 0 (0)
mean: 0 (0)
standard deviation: 0 (0)
kurtosis: 0
skewness: 0
Alpha: rgba(255,255,255,0) #FFFFFFFFFFFF0000
Colors: 1
Histogram:
10000: (65535,65535,65535, 0) #FFFFFFFFFFFF0000 rgba(255,255,255,0)
Rendering intent: Undefined
Interlace: None
Background color: white
Border color: rgba(223,223,223,1)
Matte color: grey74
Transparent color: none
Compose: Over
Page geometry: 100x100+0+0
Dispose: Undefined
Iterations: 0
Compression: None
Orientation: Undefined
Properties:
date:create: 2017-12-08T15:10:11-05:00
date:modify: 2017-12-08T15:07:11-05:00
dc:format: application/vnd.adobe.photoshop
photoshop:ColorMode: 3
signature: 9e9eb51de1b4128c59d6e66c3a4910bb54dc3799f23d5f72bf9cc4e97d728f1e
tiff:XResolution: 72
tiff:YResolution: 72
xmp:CreateDate: 2017-12-06T14:12:57-05:00
xmp:CreatorTool: Adobe Photoshop CC 2014 (Windows)
xmp:MetadataDate: 2017-12-08T15:07:09-05:00
xmp:ModifyDate: 2017-12-08T15:07:09-05:00
xmpMM:DocumentID: adobe:docid:photoshop:4f26c4a8-dc53-11e7-9170-e657d102cdc7
xmpMM:InstanceID: xmp.iid:63f83b28-654c-bb47-923c-e09e1f783d70
xmpMM:OriginalDocumentID: xmp.did:ba53f78c-4b81-9246-bd0e-33b7819e9b46
Profiles:
Profile-8bim: 17870 bytes
Profile-exif: 306 bytes
Profile-xmp: 14334 bytes
Artifacts:
verbose: true
Tainted: False
Filesize: 98.4KBB
Number pixels: 10KB
Pixels per second: 100TB
User time: 0.000u
Elapsed time: 0:01.000
Version: ImageMagick 6.7.2-7 2017-03-22 Q16 http://www.imagemagick.org


photoshop:ColorMode: 3 --> RGB, according to psd/psb documentation (http://www.adobe.com/devnet-apps/photos ... 7409_13084)
Yet it says:
Channel depth:
gray: 1-bit
alpha: 1-bit
And there's no alpha in the psd file, but:
Alpha: rgba(255,255,255,0) #FFFFFFFFFFFF0000
So, now we have rgba alpha...

Cheers,
M

[fmw42]

Please post an example of your PSD file, so we can see what it looks like.

Both IM and PS say it is a 16-bit transparent white image. That is R=G=B=255 (so grayscale) and alpha=0. So fully transparent, but white under the alpha channel. The image is 1-bit gray with the gray level being 255 (white=R=G=B=255 in rgb colors, but actually 16-bit) and 1-bit transparent with alpha=0.

I see no discrepancies.

[Maelcum]

I don't think there's such a thing that "transparent white". Transparent means there's no colour information whatsoever.
R=G=B=255 is still an RGB image and not grayscale (we just perceive it as grayscale).
Also, "1 bit gray" doesn't make any sense for me.

Cheers,
Imre

[fmw42]

No, I believe you are wrong. You cannot have transparency without some color under it. Your PS information says:

Alpha: rgba(255,255,255,0) #FFFFFFFFFFFF0000

That means it is transparent white (R=G=B=255 is white and alpha=0 means transparent)

As I said above. I created a simple transparent layer in GIMP. But it has R=G=B=A=0. That is transparent black.

Please post your PSD file, so we can inspect it.

[Maelcum]

I'll post them.

Cheers,
M

[fmw42]

I just created a single PSD transparent layer in a trial version of Photoshop Elements and saved as PSD. When I open in GIMP an look at the channels it shows gray with alpha. Elements apparently does not have a channel panel as it does full Photoshop.

Identify -verbose interprets it as colorspace gray with 1-bit white and 1 bit alpha with gray=255 (white) and alpha=0 (fully transparent) at 8-bits.

Code: Select all

identify -verbose test_ps_elements_transparent.psd
Image: test_ps_elements_transparent.psd
  Format: PSD (Adobe Photoshop bitmap)
  Class: PseudoClass
  Geometry: 600x400+0+0
  Resolution: 72x72
  Print size: 8.33333x5.55556
  Units: PixelsPerInch
  Colorspace: Gray
  Type: Bilevel
  Base type: Undefined
  Endianess: MSB
  Depth: 8/1-bit
  Channel depth:
    gray: 1-bit
    alpha: 1-bit
  Channel statistics:
    Pixels: 240000
    Gray:
      min: 255  (1)
      max: 255 (1)
      mean: 255 (1)
      standard deviation: 0 (0)
      kurtosis: 8.192e+63
      skewness: 1e+45
      entropy: nan
    Alpha:
      min: 0  (0)
      max: 0 (0)
      mean: 0 (0)
      standard deviation: 0 (0)
      kurtosis: -3
      skewness: 0
      entropy: nan
  Alpha: graya(255,0)   #FFFFFF00
  Colors: 1
  Histogram:
    240000: (255,255,255,  0) #FFFFFF00 graya(255,0)
  Colormap entries: 256
  Colormap:
         0: (  0,  0,  0,255) #000000FF graya(0,1)
         1: (  1,  1,  1,255) #010101FF graya(1,1)
         2: (  2,  2,  2,255) #020202FF graya(2,1)
         3: (  3,  3,  3,255) #030303FF graya(3,1)
         4: (  4,  4,  4,255) #040404FF graya(4,1)
         5: (  5,  5,  5,255) #050505FF graya(5,1)
         6: (  6,  6,  6,255) #060606FF graya(6,1)
         7: (  7,  7,  7,255) #070707FF graya(7,1)
         8: (  8,  8,  8,255) #080808FF graya(8,1)
         9: (  9,  9,  9,255) #090909FF graya(9,1)
        10: ( 10, 10, 10,255) #0A0A0AFF graya(10,1)
        11: ( 11, 11, 11,255) #0B0B0BFF graya(11,1)
        12: ( 12, 12, 12,255) #0C0C0CFF graya(12,1)
        13: ( 13, 13, 13,255) #0D0D0DFF graya(13,1)
        14: ( 14, 14, 14,255) #0E0E0EFF graya(14,1)
        15: ( 15, 15, 15,255) #0F0F0FFF graya(15,1)
        16: ( 16, 16, 16,255) #101010FF graya(16,1)
        17: ( 17, 17, 17,255) #111111FF graya(17,1)
        18: ( 18, 18, 18,255) #121212FF graya(18,1)
        19: ( 19, 19, 19,255) #131313FF graya(19,1)
        20: ( 20, 20, 20,255) #141414FF graya(20,1)
        21: ( 21, 21, 21,255) #151515FF graya(21,1)
        22: ( 22, 22, 22,255) #161616FF graya(22,1)
        23: ( 23, 23, 23,255) #171717FF graya(23,1)
        24: ( 24, 24, 24,255) #181818FF graya(24,1)
        25: ( 25, 25, 25,255) #191919FF graya(25,1)
        26: ( 26, 26, 26,255) #1A1A1AFF graya(26,1)
        27: ( 27, 27, 27,255) #1B1B1BFF graya(27,1)
        28: ( 28, 28, 28,255) #1C1C1CFF graya(28,1)
        29: ( 29, 29, 29,255) #1D1D1DFF graya(29,1)
        30: ( 30, 30, 30,255) #1E1E1EFF graya(30,1)
        31: ( 31, 31, 31,255) #1F1F1FFF graya(31,1)
        32: ( 32, 32, 32,255) #202020FF graya(32,1)
        33: ( 33, 33, 33,255) #212121FF graya(33,1)
        34: ( 34, 34, 34,255) #222222FF graya(34,1)
        35: ( 35, 35, 35,255) #232323FF graya(35,1)
        36: ( 36, 36, 36,255) #242424FF graya(36,1)
        37: ( 37, 37, 37,255) #252525FF graya(37,1)
        38: ( 38, 38, 38,255) #262626FF graya(38,1)
        39: ( 39, 39, 39,255) #272727FF graya(39,1)
        40: ( 40, 40, 40,255) #282828FF graya(40,1)
        41: ( 41, 41, 41,255) #292929FF graya(41,1)
        42: ( 42, 42, 42,255) #2A2A2AFF graya(42,1)
        43: ( 43, 43, 43,255) #2B2B2BFF graya(43,1)
        44: ( 44, 44, 44,255) #2C2C2CFF graya(44,1)
        45: ( 45, 45, 45,255) #2D2D2DFF graya(45,1)
        46: ( 46, 46, 46,255) #2E2E2EFF graya(46,1)
        47: ( 47, 47, 47,255) #2F2F2FFF graya(47,1)
        48: ( 48, 48, 48,255) #303030FF graya(48,1)
        49: ( 49, 49, 49,255) #313131FF graya(49,1)
        50: ( 50, 50, 50,255) #323232FF graya(50,1)
        51: ( 51, 51, 51,255) #333333FF graya(51,1)
        52: ( 52, 52, 52,255) #343434FF graya(52,1)
        53: ( 53, 53, 53,255) #353535FF graya(53,1)
        54: ( 54, 54, 54,255) #363636FF graya(54,1)
        55: ( 55, 55, 55,255) #373737FF graya(55,1)
        56: ( 56, 56, 56,255) #383838FF graya(56,1)
        57: ( 57, 57, 57,255) #393939FF graya(57,1)
        58: ( 58, 58, 58,255) #3A3A3AFF graya(58,1)
        59: ( 59, 59, 59,255) #3B3B3BFF graya(59,1)
        60: ( 60, 60, 60,255) #3C3C3CFF graya(60,1)
        61: ( 61, 61, 61,255) #3D3D3DFF graya(61,1)
        62: ( 62, 62, 62,255) #3E3E3EFF graya(62,1)
        63: ( 63, 63, 63,255) #3F3F3FFF graya(63,1)
        64: ( 64, 64, 64,255) #404040FF graya(64,1)
        65: ( 65, 65, 65,255) #414141FF graya(65,1)
        66: ( 66, 66, 66,255) #424242FF graya(66,1)
        67: ( 67, 67, 67,255) #434343FF graya(67,1)
        68: ( 68, 68, 68,255) #444444FF graya(68,1)
        69: ( 69, 69, 69,255) #454545FF graya(69,1)
        70: ( 70, 70, 70,255) #464646FF graya(70,1)
        71: ( 71, 71, 71,255) #474747FF graya(71,1)
        72: ( 72, 72, 72,255) #484848FF graya(72,1)
        73: ( 73, 73, 73,255) #494949FF graya(73,1)
        74: ( 74, 74, 74,255) #4A4A4AFF graya(74,1)
        75: ( 75, 75, 75,255) #4B4B4BFF graya(75,1)
        76: ( 76, 76, 76,255) #4C4C4CFF graya(76,1)
        77: ( 77, 77, 77,255) #4D4D4DFF graya(77,1)
        78: ( 78, 78, 78,255) #4E4E4EFF graya(78,1)
        79: ( 79, 79, 79,255) #4F4F4FFF graya(79,1)
        80: ( 80, 80, 80,255) #505050FF graya(80,1)
        81: ( 81, 81, 81,255) #515151FF graya(81,1)
        82: ( 82, 82, 82,255) #525252FF graya(82,1)
        83: ( 83, 83, 83,255) #535353FF graya(83,1)
        84: ( 84, 84, 84,255) #545454FF graya(84,1)
        85: ( 85, 85, 85,255) #555555FF graya(85,1)
        86: ( 86, 86, 86,255) #565656FF graya(86,1)
        87: ( 87, 87, 87,255) #575757FF graya(87,1)
        88: ( 88, 88, 88,255) #585858FF graya(88,1)
        89: ( 89, 89, 89,255) #595959FF graya(89,1)
        90: ( 90, 90, 90,255) #5A5A5AFF graya(90,1)
        91: ( 91, 91, 91,255) #5B5B5BFF graya(91,1)
        92: ( 92, 92, 92,255) #5C5C5CFF graya(92,1)
        93: ( 93, 93, 93,255) #5D5D5DFF graya(93,1)
        94: ( 94, 94, 94,255) #5E5E5EFF graya(94,1)
        95: ( 95, 95, 95,255) #5F5F5FFF graya(95,1)
        96: ( 96, 96, 96,255) #606060FF graya(96,1)
        97: ( 97, 97, 97,255) #616161FF graya(97,1)
        98: ( 98, 98, 98,255) #626262FF graya(98,1)
        99: ( 99, 99, 99,255) #636363FF graya(99,1)
       100: (100,100,100,255) #646464FF graya(100,1)
       101: (101,101,101,255) #656565FF graya(101,1)
       102: (102,102,102,255) #666666FF graya(102,1)
       103: (103,103,103,255) #676767FF graya(103,1)
       104: (104,104,104,255) #686868FF graya(104,1)
       105: (105,105,105,255) #696969FF graya(105,1)
       106: (106,106,106,255) #6A6A6AFF graya(106,1)
       107: (107,107,107,255) #6B6B6BFF graya(107,1)
       108: (108,108,108,255) #6C6C6CFF graya(108,1)
       109: (109,109,109,255) #6D6D6DFF graya(109,1)
       110: (110,110,110,255) #6E6E6EFF graya(110,1)
       111: (111,111,111,255) #6F6F6FFF graya(111,1)
       112: (112,112,112,255) #707070FF graya(112,1)
       113: (113,113,113,255) #717171FF graya(113,1)
       114: (114,114,114,255) #727272FF graya(114,1)
       115: (115,115,115,255) #737373FF graya(115,1)
       116: (116,116,116,255) #747474FF graya(116,1)
       117: (117,117,117,255) #757575FF graya(117,1)
       118: (118,118,118,255) #767676FF graya(118,1)
       119: (119,119,119,255) #777777FF graya(119,1)
       120: (120,120,120,255) #787878FF graya(120,1)
       121: (121,121,121,255) #797979FF graya(121,1)
       122: (122,122,122,255) #7A7A7AFF graya(122,1)
       123: (123,123,123,255) #7B7B7BFF graya(123,1)
       124: (124,124,124,255) #7C7C7CFF graya(124,1)
       125: (125,125,125,255) #7D7D7DFF graya(125,1)
       126: (126,126,126,255) #7E7E7EFF graya(126,1)
       127: (127,127,127,255) #7F7F7FFF graya(127,1)
       128: (128,128,128,255) #808080FF graya(128,1)
       129: (129,129,129,255) #818181FF graya(129,1)
       130: (130,130,130,255) #828282FF graya(130,1)
       131: (131,131,131,255) #838383FF graya(131,1)
       132: (132,132,132,255) #848484FF graya(132,1)
       133: (133,133,133,255) #858585FF graya(133,1)
       134: (134,134,134,255) #868686FF graya(134,1)
       135: (135,135,135,255) #878787FF graya(135,1)
       136: (136,136,136,255) #888888FF graya(136,1)
       137: (137,137,137,255) #898989FF graya(137,1)
       138: (138,138,138,255) #8A8A8AFF graya(138,1)
       139: (139,139,139,255) #8B8B8BFF graya(139,1)
       140: (140,140,140,255) #8C8C8CFF graya(140,1)
       141: (141,141,141,255) #8D8D8DFF graya(141,1)
       142: (142,142,142,255) #8E8E8EFF graya(142,1)
       143: (143,143,143,255) #8F8F8FFF graya(143,1)
       144: (144,144,144,255) #909090FF graya(144,1)
       145: (145,145,145,255) #919191FF graya(145,1)
       146: (146,146,146,255) #929292FF graya(146,1)
       147: (147,147,147,255) #939393FF graya(147,1)
       148: (148,148,148,255) #949494FF graya(148,1)
       149: (149,149,149,255) #959595FF graya(149,1)
       150: (150,150,150,255) #969696FF graya(150,1)
       151: (151,151,151,255) #979797FF graya(151,1)
       152: (152,152,152,255) #989898FF graya(152,1)
       153: (153,153,153,255) #999999FF graya(153,1)
       154: (154,154,154,255) #9A9A9AFF graya(154,1)
       155: (155,155,155,255) #9B9B9BFF graya(155,1)
       156: (156,156,156,255) #9C9C9CFF graya(156,1)
       157: (157,157,157,255) #9D9D9DFF graya(157,1)
       158: (158,158,158,255) #9E9E9EFF graya(158,1)
       159: (159,159,159,255) #9F9F9FFF graya(159,1)
       160: (160,160,160,255) #A0A0A0FF graya(160,1)
       161: (161,161,161,255) #A1A1A1FF graya(161,1)
       162: (162,162,162,255) #A2A2A2FF graya(162,1)
       163: (163,163,163,255) #A3A3A3FF graya(163,1)
       164: (164,164,164,255) #A4A4A4FF graya(164,1)
       165: (165,165,165,255) #A5A5A5FF graya(165,1)
       166: (166,166,166,255) #A6A6A6FF graya(166,1)
       167: (167,167,167,255) #A7A7A7FF graya(167,1)
       168: (168,168,168,255) #A8A8A8FF graya(168,1)
       169: (169,169,169,255) #A9A9A9FF graya(169,1)
       170: (170,170,170,255) #AAAAAAFF graya(170,1)
       171: (171,171,171,255) #ABABABFF graya(171,1)
       172: (172,172,172,255) #ACACACFF graya(172,1)
       173: (173,173,173,255) #ADADADFF graya(173,1)
       174: (174,174,174,255) #AEAEAEFF graya(174,1)
       175: (175,175,175,255) #AFAFAFFF graya(175,1)
       176: (176,176,176,255) #B0B0B0FF graya(176,1)
       177: (177,177,177,255) #B1B1B1FF graya(177,1)
       178: (178,178,178,255) #B2B2B2FF graya(178,1)
       179: (179,179,179,255) #B3B3B3FF graya(179,1)
       180: (180,180,180,255) #B4B4B4FF graya(180,1)
       181: (181,181,181,255) #B5B5B5FF graya(181,1)
       182: (182,182,182,255) #B6B6B6FF graya(182,1)
       183: (183,183,183,255) #B7B7B7FF graya(183,1)
       184: (184,184,184,255) #B8B8B8FF graya(184,1)
       185: (185,185,185,255) #B9B9B9FF graya(185,1)
       186: (186,186,186,255) #BABABAFF graya(186,1)
       187: (187,187,187,255) #BBBBBBFF graya(187,1)
       188: (188,188,188,255) #BCBCBCFF graya(188,1)
       189: (189,189,189,255) #BDBDBDFF graya(189,1)
       190: (190,190,190,255) #BEBEBEFF graya(190,1)
       191: (191,191,191,255) #BFBFBFFF graya(191,1)
       192: (192,192,192,255) #C0C0C0FF graya(192,1)
       193: (193,193,193,255) #C1C1C1FF graya(193,1)
       194: (194,194,194,255) #C2C2C2FF graya(194,1)
       195: (195,195,195,255) #C3C3C3FF graya(195,1)
       196: (196,196,196,255) #C4C4C4FF graya(196,1)
       197: (197,197,197,255) #C5C5C5FF graya(197,1)
       198: (198,198,198,255) #C6C6C6FF graya(198,1)
       199: (199,199,199,255) #C7C7C7FF graya(199,1)
       200: (200,200,200,255) #C8C8C8FF graya(200,1)
       201: (201,201,201,255) #C9C9C9FF graya(201,1)
       202: (202,202,202,255) #CACACAFF graya(202,1)
       203: (203,203,203,255) #CBCBCBFF graya(203,1)
       204: (204,204,204,255) #CCCCCCFF graya(204,1)
       205: (205,205,205,255) #CDCDCDFF graya(205,1)
       206: (206,206,206,255) #CECECEFF graya(206,1)
       207: (207,207,207,255) #CFCFCFFF graya(207,1)
       208: (208,208,208,255) #D0D0D0FF graya(208,1)
       209: (209,209,209,255) #D1D1D1FF graya(209,1)
       210: (210,210,210,255) #D2D2D2FF graya(210,1)
       211: (211,211,211,255) #D3D3D3FF graya(211,1)
       212: (212,212,212,255) #D4D4D4FF graya(212,1)
       213: (213,213,213,255) #D5D5D5FF graya(213,1)
       214: (214,214,214,255) #D6D6D6FF graya(214,1)
       215: (215,215,215,255) #D7D7D7FF graya(215,1)
       216: (216,216,216,255) #D8D8D8FF graya(216,1)
       217: (217,217,217,255) #D9D9D9FF graya(217,1)
       218: (218,218,218,255) #DADADAFF graya(218,1)
       219: (219,219,219,255) #DBDBDBFF graya(219,1)
       220: (220,220,220,255) #DCDCDCFF graya(220,1)
       221: (221,221,221,255) #DDDDDDFF graya(221,1)
       222: (222,222,222,255) #DEDEDEFF graya(222,1)
       223: (223,223,223,255) #DFDFDFFF graya(223,1)
       224: (224,224,224,255) #E0E0E0FF graya(224,1)
       225: (225,225,225,255) #E1E1E1FF graya(225,1)
       226: (226,226,226,255) #E2E2E2FF graya(226,1)
       227: (227,227,227,255) #E3E3E3FF graya(227,1)
       228: (228,228,228,255) #E4E4E4FF graya(228,1)
       229: (229,229,229,255) #E5E5E5FF graya(229,1)
       230: (230,230,230,255) #E6E6E6FF graya(230,1)
       231: (231,231,231,255) #E7E7E7FF graya(231,1)
       232: (232,232,232,255) #E8E8E8FF graya(232,1)
       233: (233,233,233,255) #E9E9E9FF graya(233,1)
       234: (234,234,234,255) #EAEAEAFF graya(234,1)
       235: (235,235,235,255) #EBEBEBFF graya(235,1)
       236: (236,236,236,255) #ECECECFF graya(236,1)
       237: (237,237,237,255) #EDEDEDFF graya(237,1)
       238: (238,238,238,255) #EEEEEEFF graya(238,1)
       239: (239,239,239,255) #EFEFEFFF graya(239,1)
       240: (240,240,240,255) #F0F0F0FF graya(240,1)
       241: (241,241,241,255) #F1F1F1FF graya(241,1)
       242: (242,242,242,255) #F2F2F2FF graya(242,1)
       243: (243,243,243,255) #F3F3F3FF graya(243,1)
       244: (244,244,244,255) #F4F4F4FF graya(244,1)
       245: (245,245,245,255) #F5F5F5FF graya(245,1)
       246: (246,246,246,255) #F6F6F6FF graya(246,1)
       247: (247,247,247,255) #F7F7F7FF graya(247,1)
       248: (248,248,248,255) #F8F8F8FF graya(248,1)
       249: (249,249,249,255) #F9F9F9FF graya(249,1)
       250: (250,250,250,255) #FAFAFAFF graya(250,1)
       251: (251,251,251,255) #FBFBFBFF graya(251,1)
       252: (252,252,252,255) #FCFCFCFF graya(252,1)
       253: (253,253,253,255) #FDFDFDFF graya(253,1)
       254: (254,254,254,255) #FEFEFEFF graya(254,1)
       255: (255,255,255,  0) #FFFFFF00 graya(255,0)
  Rendering intent: Undefined
  Gamma: 0.454545
  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: 600x400+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: RLE
  Orientation: Undefined
  Properties:
    date:create: 2017-12-28T14:53:21-08:00
    date:modify: 2017-12-28T14:53:21-08:00
    dc:format: application/vnd.adobe.photoshop
    photoshop:ColorMode: 1
    signature: 844d4a0ba99f0a6ec450a572a5b3fc3cf4f811b5ab97fa13262d39e16c42fe46
    tiff:XResolution: 72
    tiff:YResolution: 72
    xmp:CreateDate: 2017-12-28T14:45:29-08:00
    xmp:CreatorTool: Adobe Photoshop Elements 16.0 (Macintosh)
    xmp:MetadataDate: 2017-12-28T14:53:21-08:00
    xmp:ModifyDate: 2017-12-28T14:53:21-08:00
    xmpMM:DocumentID: xmp.did:a94a0cea-e3a5-42f4-940d-5e6b23fe8102
    xmpMM:InstanceID: xmp.iid:a94a0cea-e3a5-42f4-940d-5e6b23fe8102
    xmpMM:OriginalDocumentID: xmp.did:a94a0cea-e3a5-42f4-940d-5e6b23fe8102
  Profiles:
    Profile-8bim: 16528 bytes
    Profile-exif: 314 bytes
    Profile-xmp: 13888 bytes
  Artifacts:
    filename: test_ps_elements_transparent.psd
    verbose: true
  Tainted: False
  Filesize: 26580B
  Number pixels: 240000
  Pixels per second: 24MB
  User time: 0.010u
  Elapsed time: 0:01.009
  Version: ImageMagick 6.9.9-29 Q16 x86_64 2017-12-27 http://www.imagemagick.org
Fredericks-Mac-mini:desktop fred$