Lossy Image Compression
RICOH THETA X 11K image, auto-HDR
| lossy compression | file size |
|---|---|
| original JPEG | 11.2 MB |
| 50% quality, webp format | 2.0 MB |
| 30% quality, webp format | 1.4 MB |
Original Images Used in Test
- RICOH THETA X 11K, auto-HDR
- RICOH THETA SC2 5.4K, auto-HDR
2MB 11K THETA X Image vs 4.2MB 5.4K SC2 Image
1.4MB 11K THETA X Image vs 4.2MB 5.4K SC2 Image
3x zoom: 1.4MB 11K THETA X Image vs 4.2MB 5.4K SC2 Image
metadata
metadata is preserved in the compression process to convert the THETA X 11.2MB file into a 1.4MB file.
ExifTool Version Number : 12.40
File Name : X_30compressed.webp
Directory : .
File Size : 1350 KiB
File Modification Date/Time : 2023:03:09 13:51:41-08:00
File Access Date/Time : 2023:03:09 13:57:31-08:00
File Inode Change Date/Time : 2023:03:09 13:51:41-08:00
File Type : WEBP
File Type Extension : webp
MIME Type : image/webp
Profile CMM Type : Little CMS
Profile Version : 4.3.0
Profile Class : Display Device Profile
Color Space Data : RGB
Profile Connection Space : XYZ
Profile Date Time : 2023:03:09 21:49:38
Profile File Signature : acsp
Primary Platform : Apple Computer Inc.
CMM Flags : Not Embedded, Independent
Device Attributes : Reflective, Glossy, Positive, Color
Rendering Intent : Perceptual
Connection Space Illuminant : 0.9642 1 0.82491
Profile Creator : Little CMS
Profile Copyright : Public Domain
Media White Point : 0.9642 1 0.82491
Chromatic Adaptation : 1.04788 0.02292 -0.05022 0.02959 0.99048
-0.01707 -0.00925 0.01508 0.75168
Red Matrix Column : 0.43604 0.22249 0.01392
Blue Matrix Column : 0.14305 0.06061 0.71393
Green Matrix Column : 0.38512 0.7169 0.09706
Chromaticity Channels : 3
Chromaticity Channel 1 : 0.64 0.33002
Chromaticity Channel 2 : 0.3 0.60001
Chromaticity Channel 3 : 0.15001 0.06
Device Model Desc : sRGB
VP8 Version : 0 (bicubic reconstruction, normal loop)
Image Width : 11008
Image Height : 5504
Exif Byte Order : Little-endian (Intel, II)
Bits Per Sample : 8 8 8
Make : RICOH
Camera Model Name : RICOH THETA X
Orientation : Horizontal (normal)
X Resolution : 300
Y Resolution : 300
Resolution Unit : inches
Modify Date : 2023:03:09 13:51:24
Y Cb Cr Positioning : Centered
Exposure Time : 1/13
F Number : 2.4
Exposure Program : Program AE
ISO : 80
Sensitivity Type : Standard Output Sensitivity
Exif Version : 0231
Date/Time Original : 2022:08:23 16:50:02
Create Date : 2022:08:23 16:50:02
Offset Time : +09:00
Offset Time Original : +09:00
Offset Time Digitized : +09:00
Components Configuration : Y, Cb, Cr, -
Exposure Compensation : 0
Max Aperture Value : 2.3
Metering Mode : Multi-segment
Light Source : Unknown
Flash : Unknown (0x32)
Focal Length : 1.4 mm
Flashpix Version : 0100
Color Space : sRGB
Exif Image Width : 11008
Exif Image Height : 5504
Exposure Mode : Auto
White Balance : Auto
Scene Capture Type : Standard
Sharpness : Normal
GPS Version ID : 2.3.0.0
GPS Latitude Ref : North
GPS Longitude Ref : East
GPS Altitude Ref : Below Sea Level
GPS Time Stamp : 07:49:57
GPS Status : Measurement Active
GPS Measure Mode : 3-Dimensional Measurement
GPS Dilution Of Precision : 4.98
GPS Speed Ref : km/h
GPS Speed : 0.375
GPS Track Ref : Unknown ()
GPS Track : undef
GPS Img Direction Ref : Magnetic North
GPS Map Datum : WGS-84
GPS Processing Method : INT
GPS Date Stamp : 2022:08:23
XMP Toolkit : XMP Core 4.4.0-Exiv2
Format : image/webp
Api : 2.0
Time Stamp : 1678398701881200
Cropped Area Image Height Pixels: 5504
Cropped Area Image Width Pixels : 11008
Full Pano Height Pixels : 5504
Full Pano Width Pixels : 11008
Projection Type : equirectangular
Use Panorama Viewer : True
Metadata Date : 2023:03:09T13:51:24:08:00
History Action : saved
History When : 2023:03:09 13:51:41-08:00
Aperture : 2.4
Image Size : 11008x5504
Megapixels : 60.6
Shutter Speed : 1/13
Create Date : 2022:08:23 16:50:02+09:00
Date/Time Original : 2022:08:23 16:50:02+09:00
Modify Date : 2023:03:09 13:51:24+09:00
GPS Altitude : 5.8 m Below Sea Level
GPS Date/Time : 2022:08:23 07:49:57Z
GPS Latitude : 35 deg 35' 52.20" N
GPS Longitude : 139 deg 42' 22.15" E
Focal Length : 1.4 mm
GPS Position : 35 deg 35' 52.20" N, 139 deg 42' 22.15" E
Light Value : 6.5
Demo of 1.4MB THETA X 11K Image
