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tif(big files) convert and reduce size to gif problem
Posted: 2013-12-14T11:40:47-07:00
by ylard
Hello
I have the following problem: I have uncompressed tif files from 2 different color scanners: one A0 from I2s and one A2 SCAMAX.
I convert both with the same parameters to gif files(64x64): one has a reasonable size (3KB)(from the A0) and the other one is 278Kb for an image of 64x64
if I look in the files the second one is 'coded' with ascii values' while the first one is coded in hexa as 'usual'. I do not understand why this append
The beginning of the second file is
Code: Select all
IF89a@ followed by some hexa caracters then
CREATED "9/2/2009" # Time: 16:03
KEYWORD "SampleID"
KEYWORD "SAMPLE_NAME"
NUMBER_OF_FIELDS 5
BEGIN_DATA_FORMAT
SampleID SAMPLE_NAME RGB_R RGB_G RGB_B
END_DATA_FORMAT
NUMBER_OF_SETS 140
BEGIN_DATA
1 A1 238.11 235.50 239.40
2 A2 18ΓΏ.47 22.81 21.60
3 A3 96.55 96.22 97.66
4 A4 240.22 237.60 242.73
5 A5 17.14 23.69 21.73
6 A6 96.52 96.77 98.59
I have 2 questions:
_ does anyone know why this append? I think I can consider this as a 'bug'
is it any solution in the command line of 'convert' to force the gif format to be non ascii?
(sorry for my poor english)
thanks for any answer
regards
ylard
Re: tif(big files) convert and reduce size to gif problem
Posted: 2013-12-14T13:50:47-07:00
by fmw42
As a guess, I would think that you have some large profile data included in the meta data. Try adding -strip to your command. If that fails, then post a link to your images (you can host them at any free hosting site such as dropbox). Or show the results of identify -verbose yourimage
Also please identify your version of IM and platform
Re: tif(big files) convert and reduce size to gif problem
Posted: 2013-12-18T03:07:42-07:00
by ylard
hello,
this solution (append -strip) is great.
thanks for your help
and sorry for the delay
I will also try to undestand for the metadata
regards
Ylard
Re: tif(big files) convert and reduce size to gif problem
Posted: 2013-12-18T03:19:34-07:00
by ylard
Hello again,
here the result of identify -verbose
this image gives 'too big' gif
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Image: 510_0002_000_02014_000_A_0023.tif
Format: TIFF (Tagged Image File Format)
Class: DirectClass
Geometry: 12592x8992+0+0
Resolution: 400x400
Print size: 31.48x22.48
Units: PixelsPerInch
Type: TrueColor
Base type: TrueColor
Endianess: MSB
Colorspace: RGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Red:
min: 0 (0)
max: 197 (0.772549)
mean: 137.841 (0.540552)
standard deviation: 58.6107 (0.229846)
kurtosis: 1.23007
skewness: -1.72683
Green:
min: 0 (0)
max: 189 (0.741176)
mean: 131.193 (0.514481)
standard deviation: 56.9361 (0.223279)
kurtosis: 1.07597
skewness: -1.68545
Blue:
min: 0 (0)
max: 174 (0.682353)
mean: 106.86 (0.41906)
standard deviation: 48.4399 (0.18996)
kurtosis: 0.768258
skewness: -1.59067
Image statistics:
Overall:
min: 0 (0)
max: 197 (0.772549)
mean: 93.9734 (0.368523)
standard deviation: 73.0241 (0.286369)
kurtosis: -1.68617
skewness: -0.402264
Rendering intent: Undefined
Interlace: None
Background color: white
Border color: rgb(223,223,223)
Matte color: grey74
Transparent color: black
Compose: Over
Page geometry: 12592x8992+0+0
Dispose: Undefined
Iterations: 0
Compression: None
Orientation: TopLeft
Properties:
date:create: 2013-12-17T11:30:45+01:00
date:modify: 2011-02-04T14:30:48+01:00
signature: d579f8e5022ff250e7665223a31ccc80ad40745e1327fc3f4ed0e29f8e530310
tiff:hostcomputer: C211413210003
tiff:make: i2s Digibook Scanner
tiff:model: Suprascan A0 14000 RGB
tiff:photometric: RGB
tiff:rows-per-strip: 1
tiff:software: Digibook Version :5, 6, 2, 7
tiff:timestamp: 2011:02:04 14:30:38
Profiles:
Profile-icc: 272432 bytes
digibook-020909
Artifacts:
verbose: true
Tainted: False
Filesize: 340MB
Number pixels: 113.2M
Pixels per second: 173.4M
User time: 0.655u
Elapsed time: 0:01.652
Version: ImageMagick 6.6.0-10 2010-03-24 Q16 http://www.imagemagick.org
this image gives 'short' gif
Code: Select all
Image: 510_0002_000_01681_000_0_0001.tif
Format: TIFF (Tagged Image File Format)
Class: DirectClass
Geometry: 12198x8969+0+0
Resolution: 400x400
Print size: 30.495x22.4225
Units: PixelsPerInch
Type: TrueColor
Base type: TrueColor
Endianess: MSB
Colorspace: RGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Red:
min: 0 (0)
max: 255 (1)
mean: 174.601 (0.684712)
standard deviation: 59.533 (0.233463)
kurtosis: 1.14338
skewness: -1.61915
Green:
min: 0 (0)
max: 227 (0.890196)
mean: 154.288 (0.60505)
standard deviation: 52.8233 (0.20715)
kurtosis: 1.1755
skewness: -1.6032
Blue:
min: 0 (0)
max: 194 (0.760784)
mean: 111.945 (0.439002)
standard deviation: 36.2755 (0.142257)
kurtosis: 0.699862
skewness: -1.33841
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 110.209 (0.432191)
standard deviation: 80.4499 (0.31549)
kurtosis: -1.5075
skewness: -0.272365
Rendering intent: Undefined
Interlace: None
Background color: white
Border color: rgb(223,223,223)
Matte color: grey74
Transparent color: black
Compose: Over
Page geometry: 12198x8969+0+0
Dispose: Undefined
Iterations: 0
Scene: 11
Compression: None
Orientation: TopLeft
Properties:
comment: 11 - Main frame
date:create: 2013-12-17T11:29:55+01:00
date:modify: 2013-01-04T13:19:49+01:00
label: 11
signature: 4ccc9a81b2baf2dd662b8a210113dbb0475a53c2891422fc4f57ae4736453c23
tiff:artist: Anonymous
tiff:hostcomputer: PC-QUARTZ
tiff:make: i2S, Corp.
tiff:model: SupraScanQuartzHDA0 [SN: 320701] - CamQuartzHD [SN: 320701]
tiff:photometric: RGB
tiff:rows-per-strip: 1
tiff:software: YooScan v1.2.0
tiff:timestamp: 2013:01:04 13:19:48
Artifacts:
verbose: true
Tainted: False
Filesize: 328.3MB
Number pixels: 109.4M
Pixels per second: 170.7M
User time: 0.640u
Elapsed time: 0:01.641
Version: ImageMagick 6.6.0-10 2010-03-24 Q16 http://www.imagemagick.org
and this is the command line which gives strange result
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convert 510_0002_000_02014_000_A_0023.tif -resize 64x64 -limit memory 2GB -background white -gravity center -extent 64x64 -format gif 510_0002_000_02014_000_A_0023.gif
Thanks for advices
Ylard
Re: tif(big files) convert and reduce size to gif problem
Posted: 2013-12-18T10:33:35-07:00
by fmw42
Code: Select all
Profiles:
Profile-icc: 272432 bytes
digibook-020909
You have a very large 2.7 Mbyte profile that needs to be removed by -strip
Re: tif(big files) convert and reduce size to gif problem
Posted: 2013-12-19T01:56:53-07:00
by ylard
really thanks for your answers
this subject may be closed (Can I do this?)
regards
Just edit the title of your very first post.