Image raster format

Recognizes automatically and reads JPEG, GIF, TIFF, BMP and PNG raster formats.

Raster-files can use several different coordinate files, which are needed to set coordinates to raster files. Only in some formats the coordinates are included in the data file (e.g. ECW). The coordinate file has to be in the same directory as the data file. It will used automatically, and no coordinates are asked when reading the raster file. If no coordinate file is found, the pixel coordinates will be used.

Supported formats

Converter supports following formats. Parenthesis after the name contains knowsn file extensions and converter name.

BMP - Windows Bitmap (*.bmp, ImageBmp)

Reads and writes unpacked Bitmap files.

GIF - Compuserve Graphics Interchange Format (*.gif, ImageGif)

Reads all 256-color GIF-images.

JPEG Interchange Format (.jpg, .jpeg, ImageJpeg)

Reads and writes both full color and grayscale JPG-images. Note that every time you save using this format, some information is lost from image.

TIFF - Tagged Image File Format (*.tif, ImageTiff)

Reads most TIFF-images and writes full color pictures. Read-function can handle possible GeoTIFF-coordinates.

PNG - Portable Network Graphics (*.png, ImagePng)

Reads and writes all PNG-images.

ECW - Enhanced Compression Wavelet (*.ecw, ImagePng)

Reads and writes ECW-images as single pictures. Note that big images do not necessarly fit to memory. Usually ECW-images should be viewed using separate function.

JPEG2000 (*.jp2, ImageJpeg2000)

Technically similar to ECW, but uses lossless packing. This means that it is more suitable for storing raster maps.

PDF file reading

Converter can also read PDF files as raster images. This requires external program for converting PDF file first to raster image. Image is then read normally based on its file extension. Coordinate information is not read, but the image must be positioned manually afterwards.

Recommended program is ImageMagick, which can be loaded from address http://www.imagemagick.org/script/download.php. Additionally separate GhostScript program is required for PDF files. It can be loaded from address https://www.ghostscript.com/download/gsdnld.html.

Following instructions work with ImageMagick version 7.0 or newer. After installing programs ImageMagick program path (e.g. C:\Program Files\ImageMagick-7.0.7-Q16\magick.exe) is set to special setting PdfConverter. Special setting PdfParameter can be used to set command line parameters. Following is used as default:

convert -density 300 -alpha Opaque "%1" "%2"

Command line must have parameter command at start and parameters "%1" and "%2" at end for input and output file names. All other parameters go between them. Parameter -density 300 determines image resolution as dots per inch (DPI). More parameters can be found from address http://www.imagemagick.org/script/command-line-processing.php.