|
FME Format Type Identifier |
JPEG |
|
Reader/Writer |
Both |
|
Typical File Extensions |
.jpg, .jpeg, .jpe, .jif, .jfif, .jfi |
JPEG (Joint Photographic Experts Group) is a standardized image compression mechanism. JPEG is designed for compressing either full-color 3-band (RGB) or grayscale 1-band images. JPEG compression can make a file very small, but it is “lossy,” meaning that image quality is lost when the image is compressed.
JPEG data can be either 8- or 12-bit.
The current version of this format supports reading, writing, but not update in place. There is currently no support for georeferencing information or metadata for JPEG files.
JPEG Product and System Requirements
|
Format |
FME Platform |
Operating System |
||||
|---|---|---|---|---|---|---|
|
Reader/Writer |
FME Form |
FME Flow |
FME Flow Hosted |
Windows 64-bit |
Linux |
Mac |
|
Reader |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
|
Writer |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Reader Overview
The FME considers a single JPEG file to be a dataset. The JPEG file contains pixel data. Each pixel in the file is a point in a single FME raster feature.
Writer Overview
FME considers a writer dataset to be a folder name. The JPEG writer distinguishes duplicate output files by appending numbers to the filenames.
FME Raster Features
FME raster features represent raster data and use several concepts that are unlike those used in the handling of vector data.
For comprehensive information about how FME processes raster data, see Rasters.
JPEG files can only be created with square pixel dimensions.
JPEG supports rasters with either a Red8, a Green8, and a Blue8 band, or a single Gray8 band.