我遇到了一个奇怪的现象：如果我尝试 \includegraphics 两个具有相同属性的 .jpeg 文件，它们会以不同的大小呈现（几乎是缩略图与实际大小）由于这种情况随机发生在一组文件上，所以我陷入了困境。我不确定我需要检查什么。
\documentclass[titlepage,a4paper,12pt]{article}
\usepackage[OT2,T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{graphicx}
\usepackage[american,russian,italian]{babel}
\usepackage[babel,italian=guillemets]{csquotes}
\author{mario \\ versione 0.1}
\title{TEST}
\date{\today}
\begin{document}
\maketitle
\begin{center}
%%\includegraphics[scale=0.225]{img/DSC_0060.JPG}
\includegraphics[scale=1]{img/DSC_0060.JPG}
\end{center}
\begin{center}
%%\includegraphics[scale=0.225]{img/DSC_0174.JPG}
\includegraphics[scale=1]{img/DSC_0174.JPG}
\end{center}
\end{document}
从 myfile.log 中，比较请求的大小，为什么是 481.79881pt x 724.62543pt 而不是 2007.49512pt x 3019.27267pt？
<img/DSC_0060.JPG, id=8, 481.8pt x 724.6272pt>
File: img/DSC_0060.JPG Graphic file (type jpg)
<use img/DSC_0060.JPG>
Package pdftex.def Info: img/DSC_0060.JPG used on input line 22.
(pdftex.def) Requested size: 481.79881pt x 724.62543pt.
Overfull \hbox (91.79881pt too wide) in paragraph at lines 22--23
[]
[]
[1]
Overfull \vbox (132.62543pt too high) has occurred while \output is active []
[2 <./img/DSC_0060.JPG>] <img/DSC_0174.JPG, id=15, 2007.5pt x 3019.28pt>
File: img/DSC_0174.JPG Graphic file (type jpg)
<use img/DSC_0174.JPG>
Package pdftex.def Info: img/DSC_0174.JPG used on input line 27.
(pdftex.def) Requested size: 2007.49512pt x 3019.27267pt.
Overfull \hbox (1617.49512pt too wide) in paragraph at lines 27--28
[]
[]
[3]
Overfull \vbox (2427.27267pt too high) has occurred while \output is active [] [4 <./img/DSC_0174.JPG>]
编辑这里的第一个答案很好地修复了我的代码（谢谢！），但没有解决上述问题。
更多信息identify -verbose DSC_0060.JPG
Image: DSC_0060.JPG
Format: JPEG (Joint Photographic Experts Group JFIF format)
Mime type: image/jpeg
Class: DirectClass
Geometry: 2000x3008+0+0
Resolution: 300x300
Print size: 6.66667x10.0267
Units: PixelsPerInch
Type: TrueColor
Endianess: Undefined
Colorspace: sRGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Pixels: 6016000
Red:
min: 0 (0)
max: 215 (0.843137)
mean: 146.208 (0.573363)
standard deviation: 21.9552 (0.0860987)
kurtosis: 12.2775
skewness: -3.30986
entropy: 0.717243
Green:
min: 0 (0)
max: 202 (0.792157)
mean: 149.219 (0.585171)
standard deviation: 25.7637 (0.101034)
kurtosis: 7.73389
skewness: -2.47053
entropy: 0.798522
Blue:
min: 0 (0)
max: 209 (0.819608)
mean: 154.539 (0.606037)
standard deviation: 31.2284 (0.122464)
kurtosis: 2.85164
skewness: -1.37373
entropy: 0.851679
Image statistics:
Overall:
min: 0 (0)
max: 215 (0.843137)
mean: 149.989 (0.588191)
standard deviation: 26.5895 (0.104273)
kurtosis: 6.27469
skewness: -1.99941
entropy: 0.789148
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: white
Border color: srgb(223,223,223)
Matte color: grey74
Transparent color: black
Interlace: None
Intensity: Undefined
Compose: Over
Page geometry: 2000x3008+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 77
Orientation: TopLeft
Properties:
date:create: 2016-08-04T14:14:24+02:00
date:modify: 2010-01-07T23:36:18+01:00
exif:ColorSpace: 1
exif:ComponentsConfiguration: 1, 2, 3, 0
exif:ExifImageLength: 3008
exif:ExifImageWidth: 2000
exif:ExifOffset: 102
exif:ExifVersion: 48, 50, 50, 48
exif:FlashPixVersion: 48, 49, 48, 48
exif:InteroperabilityOffset: 204
exif:MakerNote: 78, 105, 107, 111, 110, 0, 2, 0, 0, 0, 73, 73, 42, 0, 8, 0, 0, 0, 5, 0, 1, 0, 7, 0, 4, 0, 0, 0, 48, 50, 49, 48, 17, 0, 4, 0, 1, 0, 0, 0, 74, 0, 0, 0, 9, 14, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 14, 4, 0, 1, 0, 0, 0, 168, 0, 0, 0, 25, 14, 3, 0, 2, 0, 0, 0, 0, 1, 60, 0
exif:Orientation: 1
exif:ResolutionUnit: 2
exif:thumbnail:Compression: 6
exif:thumbnail:InteroperabilityIndex: R98
exif:thumbnail:InteroperabilityVersion: 0, 1, 0, 0
exif:thumbnail:JPEGInterchangeFormat: 512
exif:thumbnail:JPEGInterchangeFormatLength: 1091
exif:thumbnail:ResolutionUnit: 2
exif:thumbnail:XResolution: 300/1
exif:thumbnail:YResolution: 300/1
exif:XResolution: 300/1
exif:YCbCrPositioning: 1
exif:YResolution: 300/1
jpeg:colorspace: 2
jpeg:sampling-factor: 2x1,1x1,1x1
signature: 6d09810169e82c194b94f8db983a84e558d441971ad4031bc54b69cc33a2523a
Profiles:
Profile-exif: 15258 bytes
Artifacts:
filename: DSC_0060.JPG
verbose: true
Tainted: False
Filesize: 702KB
Number pixels: 6.016M
Pixels per second: 1.504TB
User time: 0.000u
Elapsed time: 0:01.000
Version: ImageMagick 6.9.2-7 Q16 x86_64 2015-12-06 http://www.imagemagick.org
更多信息identify -verbose DSC_0174.JPG
Image: DSC_0174.JPG
Format: JPEG (Joint Photographic Experts Group JFIF format)
Mime type: image/jpeg
Class: DirectClass
Geometry: 2000x3008+0+0
Resolution: 300x300
Print size: 6.66667x10.0267
Units: PixelsPerInch
Type: TrueColor
Endianess: Undefined
Colorspace: sRGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Pixels: 6016000
Red:
min: 0 (0)
max: 225 (0.882353)
mean: 144.882 (0.568164)
standard deviation: 14.0253 (0.055001)
kurtosis: 25.4054
skewness: -4.05491
entropy: 0.67539
Green:
min: 0 (0)
max: 241 (0.945098)
mean: 147.549 (0.578623)
standard deviation: 17.5731 (0.0689142)
kurtosis: 13.703
skewness: -2.84547
entropy: 0.730962
Blue:
min: 0 (0)
max: 255 (1)
mean: 154.287 (0.605049)
standard deviation: 23.1208 (0.0906698)
kurtosis: 3.88739
skewness: -1.3269
entropy: 0.7888
Image statistics:
Overall:
min: 0 (0)
max: 255 (1)
mean: 148.906 (0.583945)
standard deviation: 18.6198 (0.0730189)
kurtosis: 9.99953
skewness: -1.95921
entropy: 0.731718
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: white
Border color: srgb(223,223,223)
Matte color: grey74
Transparent color: black
Interlace: None
Intensity: Undefined
Compose: Over
Page geometry: 2000x3008+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 77
Orientation: TopLeft
Properties:
date:create: 2016-08-04T14:14:24+02:00
date:modify: 2013-06-28T12:21:22+02:00
exif:ColorSpace: 1
exif:ComponentsConfiguration: 1, 2, 3, 0
exif:ExifImageLength: 2000
exif:ExifImageWidth: 3008
exif:ExifOffset: 102
exif:ExifVersion: 48, 50, 50, 48
exif:FlashPixVersion: 48, 49, 48, 48
exif:InteroperabilityOffset: 284
exif:MakerNote: 78, 105, 107, 111, 110, 0, 2, 0, 0, 0, 73, 73, 42, 0, 8, 0, 0, 0, 5, 0, 1, 0, 7, 0, 4, 0, 0, 0, 48, 50, 49, 48, 17, 0, 4, 0, 1, 0, 0, 0, 74, 0, 0, 0, 9, 14, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 14, 4, 0, 1, 0, 0, 0, 168, 0, 0, 0, 25, 14, 3, 0, 2, 0, 0, 0, 0, 1, 60, 0
exif:Orientation: 1
exif:ResolutionUnit: 2
exif:thumbnail:Compression: 6
exif:thumbnail:InteroperabilityIndex: R98
exif:thumbnail:InteroperabilityVersion: 0, 1, 0, 0
exif:thumbnail:JPEGInterchangeFormat: 408
exif:thumbnail:JPEGInterchangeFormatLength: 2454
exif:thumbnail:ResolutionUnit: 2
exif:thumbnail:XResolution: 300/1
exif:thumbnail:YResolution: 300/1
exif:XResolution: 300/1
exif:YCbCrPositioning: 1
exif:YResolution: 300/1
jpeg:colorspace: 2
jpeg:sampling-factor: 1x2,1x1,1x1
signature: c3f1569485cf0cd8522e5648f95bcd85ae41f1fd24c703d4815aeccfa4699c07
Profiles:
Profile-exif: 2868 bytes
Artifacts:
filename: DSC_0174.JPG
verbose: true
Tainted: False
Filesize: 619KB
Number pixels: 6.016M
Pixels per second: 1.2032TB
User time: 0.000u
Elapsed time: 0:01.000
Version: ImageMagick 6.9.2-7 Q16 x86_64 2015-12-06 http://www.imagemagick.org
identify -verbose A174.JPG
Image: A174.JPG
Format: JPEG (Joint Photographic Experts Group JFIF format)
Mime type: image/jpeg
Class: DirectClass
Geometry: 2000x3008+0+0
Resolution: 300x300
Print size: 6.66667x10.0267
Units: Unrecognized
Type: TrueColor
Endianess: Undefined
Colorspace: sRGB
Depth: 8-bit
Channel depth:
red: 8-bit
green: 8-bit
blue: 8-bit
Channel statistics:
Pixels: 6016000
Red:
min: 0 (0)
max: 216 (0.847059)
mean: 146.219 (0.573408)
standard deviation: 21.9196 (0.0859591)
kurtosis: 12.2549
skewness: -3.30845
entropy: 0.716068
Green:
min: 0 (0)
max: 202 (0.792157)
mean: 149.145 (0.584883)
standard deviation: 25.7205 (0.100865)
kurtosis: 7.70369
skewness: -2.46456
entropy: 0.797841
Blue:
min: 0 (0)
max: 209 (0.819608)
mean: 154.81 (0.607099)
standard deviation: 31.3309 (0.122866)
kurtosis: 2.80184
skewness: -1.3623
entropy: 0.852083
Image statistics:
Overall:
min: 0 (0)
max: 216 (0.847059)
mean: 150.058 (0.588463)
standard deviation: 26.606 (0.104337)
kurtosis: 6.22509
skewness: -1.98185
entropy: 0.788664
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: white
Border color: srgb(223,223,223)
Matte color: grey74
Transparent color: black
Interlace: JPEG
Intensity: Undefined
Compose: Over
Page geometry: 2000x3008+0+0
Dispose: Undefined
Iterations: 0
Compression: JPEG
Quality: 90
Orientation: Undefined
Properties:
date:create: 2016-08-04T16:15:46+02:00
date:modify: 2016-08-04T16:15:46+02:00
exif:ColorSpace: sRGB
exif:ComponentsConfiguration: 1, 2, 3, 0
exif:Compression: JPEG compression
exif:ExifImageLength: 3008
exif:ExifImageWidth: 2000
exif:ExifOffset: 102
exif:ExifVersion: Exif Version 2.2
exif:FlashPixVersion: FlashPix Version 1.0
exif:InteroperabilityIndex: R98
exif:InteroperabilityOffset: 288
exif:MakerNote: 84 bytes undefined data
exif:Orientation: Top-left
exif:PixelXDimension: 2000
exif:PixelYDimension: 3008
exif:ResolutionUnit: Inch
exif:thumbnail:Compression: 6
exif:thumbnail:InteroperabilityIndex: R98
exif:thumbnail:InteroperabilityVersion: 0, 1, 0, 0
exif:thumbnail:JPEGInterchangeFormat: 412
exif:thumbnail:JPEGInterchangeFormatLength: 4578
exif:thumbnail:ResolutionUnit: 2
exif:thumbnail:XResolution: 300/1
exif:thumbnail:YResolution: 300/1
exif:XResolution: 300
exif:YCbCrPositioning: Centered
exif:YResolution: 300
jpeg:colorspace: 2
jpeg:sampling-factor: 1x1,1x1,1x1
signature: dcec435a0ac186e8c08a5567ecbce4f1d0eae42f62edd0c823600a939e11d164
Profiles:
Profile-exif: 4996 bytes
Profile-xmp: 1271 bytes
Artifacts:
filename: A174.JPG
verbose: true
Tainted: False
Filesize: 883KB
Number pixels: 6.016M
Pixels per second: 668.44GB
User time: 0.000u
Elapsed time: 0:01.000
Version: ImageMagick 6.9.2-7 Q16 x86_64 2015-12-06 http://www.imagemagick.org
