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== Comparison ==
=== Feature Comparison ===
Below table shows a comparison of different image formats<ref name=":2" />:
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Note: It is acknowledged that a summary such as that in the comparison table might be somewhat incomplete when it comes to features of different formats. For example, the table does not cover some of the extensions of JPEG.
The table below illustrates coding efficiency of HEVC intra coding with respect to well-known still picture codecs. The results indicate that JPEG would require '''''2.39''''' times the file size in order to achieve the same objective picture quality. For JPEG-XR this number is '''''1.66''''' and for JPEG-2000 it is '''''1.44'''''.
{| class="MsoNormalTable"
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'''Class'''
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'''Resolution'''
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'''Characteristics'''
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'''JPEG'''
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'''JPEG XR'''
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'''JPEG 2000'''
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Class A
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2560x1600
|
Cropped 4Kx2K sequences for Ultra
HDTV services
|
1,87
|
1,44
|
1,48
|-
|
Class B
|
1920x1080
|
High resolution sequences for
streaming and broadcast services
|
2,24
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1,62
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1,15
|-
|
Class C
|
832x480
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Medium resolution sequences for
Internet/mobile video services
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2,22
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1,53
|
1,50
|-
|
Class C
|
832x480
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Medium resolution sequences for
Internet/mobile video services
|
2,22
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1,53
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1,50
|-
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Class D
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416x240
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Low resolution sequences for
services to resource constrained devices
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2,10
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1,47
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1,43
|-
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Class E
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1280x720
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720p sequences for video
conferencing applications
|
2,70
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1,73
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1,23
|-
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Class F
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1024x768, 1280x720
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Computer screen content and
computer generated content
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3,23
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2,18
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1,87
|-
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'''Average'''
|
|
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'''2,39'''
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'''1,66'''
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'''1,44'''
|}
== Syntax and Structure ==
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