Export 2d Preview (Preview Warping)

The preview (warping) exporter is used to display a meaningful preview of the generated data. A selected image is cut, warped and combined with blending information according to the calculated information. Those data can be send to the PatternGenerator program where it is displayed as full-screen image, showing the final result.

This functionality depends on running PatternGenerator instances on all image generators. The Mapper will calculate the target images which is send to the clients through a network connection.

Export Settings

../../_images/Export2dPreview.png
Image

The path where the image that shall be displayed is.

Blending

If enabled, the blending will be calculated and exported for each projector.

Clipping

If enabled, clipping data will be calculated, added to the blending images and exported for each projector. Apply previous blending: If checked, the previously calculated blending will be applied instead of recalculating the blending. Can be activated to shorten the calculations.

Export 3d preview

The preview exporter is used to display a meaningful preview of the generated data. Using software warping and blending with the PatternGenerator program, a simple 3d scene is displayed which can be judged as final result. The only optical difference should occur through different interpolation algorithms used by warp units or software and can be considered as minor.

This functionality depends on running PatternGenerator instances on all image generators. The Mapper will calculate the blending and warping information which is send to the clients through a network connection. For this the Mapper implements a web-server which is configured with the Preview exporter options.

Note

This mechanism works with other network servers already running. That’s what the target path and server URL options are for.

Export Settings

../../_images/Export3dPreview.png
Blending

If enabled, the blending will be calculated and exported for each projector

Clipping

If enabled, clipping data will be calculated, added to the blending images and exported for each projector. It is only usable if blending is enabled.

Brightness adjust

If enabled, uniformity correction is applied.

Black Level Correction

If enabled, black level correction data is calculated and exported as well.

Quality

Allows to adjust the shading resolution to speed up the preview calculations.

Texture

An optional custom image to use for preview.

Path

The path where the result data is exported to. This has to be the root directory of your network web or ftp server. The path of the internal web-server (etc/docroot) is the default. Usually no changes are needed here.

Server URL

Enter the valid server URL, where the result data is accessible. The internal web server provides the data at port 8080. The current local IP address is the default value. Please make sure the firewall is opened for the port selected.

Setting up an external server

Calculating blending and blacklevel adjustments require lots of computational resources. Projects with many projectors may utilize the processor to the full which can have an impact on the data transmission to the PatternGenerator. This can be the case if the Preview3d exporter fails for no obvious reason. Setting up an external server can resolve this issue.

The Mapper support any URL-based transmission of data. Setting up or using an already existing server (http or ftp for instance) works fine.

  1. Install an ftp or http server and configure username/password if necessary (skip if using existing server).

  2. Select servers document or ftp root in Preview3d options “Path:”.

  3. Configure URL which clients will use to download the images.

Examples of URLs:

  • Webserver at port 8080 (Mapper3d internal server): http://host-IP:8080

  • FTP-server with username and password: ftp://user:password@host-IP

  • FTP-server with username and no password: ftp://user@host-IP

Note that the host-IP is the IP-address of the PC where the Mapper is running, and which is accessible from other computers. In most cases this is not 127.0.0.1 or localhost.

We recommend installing FileZilla for its ease of use.