how to display images in mosaic format?

[Nithya]

how to create and display Tile Geotiff (mosaic format)

[ChristianEhrlicher]

As there's no plugin for this available (at least none I'm aware of) you have to write your own QImageIOHandler where you have to do loading by yourself.
Because geotiff is similar to tiff maybe it's worth trying if you can load it as simple tiff file.

[Nithya]

I already have developed a pluggin that supports all the raster formats(tif,dted,...) to display.
Now I am trying for some method to display more than one images on one widget in a mosaic view.

[Nithya]

Is there any available concept of mosaicing multiple images(geotif) in Qt or simply in C++ before displaying???

I'm using libgdal function calls in Qt to display the images. Now I'm stuck in the middle how to proceed in CREATING and DISPLAYING TILED Geotiff.

[ChristianEhrlicher]

Currently I've no idea other than
a) creating one big image with all tilces
b) overwrite QWidget:aintEvent() and paint the tiles the way you like it

[Nithya]

Has anybody got to see any samples of mosacing concept???

[ChristianEhrlicher]

I don't understand what you're missing - why can't you simply paint your images one to each other onto your QLabel? What else needs to be done?

[Nithya]

what I'm missing is combine multiple tiled geotiff images into one Image(QImage) and display.

[Nithya]

I need to create tiled image from multiple images.

[ChristianEhrlicher]

Create a new QImage and paint on it with QPainter

[Nithya]

Sorry, It is not as simple.Since it is GIS map I'm expecting for a solution to merge more than one images into a single image and display .
Merging is the problem(based on lat/lon) .it needs to merged.

Thank you for your suggestion

[Nithya]

Sorry, It is not as simple.Since it is GIS map, I'm expecting for a solution to merge more than one images into a single image and display .
Merging is the problem(based on lat/lon).

Tiling concept is available in gdal . The proper sequential use of it in Qt is what now I'm looking forward.

Thank you for your suggestion

[ChristianEhrlicher]

I don't see what this has to do with Qt but ...

[Nithya]

As I told you before stitching more than one Image into a single image before displaying is what I need to do with Qt.

Any function is available to append a QImage type to another QImage type and to display as single image.(without any space in between).

[aamer4yu]

Why cnt u make a function yourself ?

or may be QImage::bitBlt might be useful to u ?