B-SIM V2.5 Reference - Blow molding simulation
Image distortion and pre-distortion using bitmap images
Images from plane, sphere or cylinder
This option allows projections of any bitmap image represented in the following formats: BMP (Windows bitmap), JPEG (bitmap with JPEG compression) and RGB. Multiple images can be projected. For the projection, every bitmap having its resolution higher than 1024 * 1024 is scaled to have maximum resolution 1024 * 1024.
This document contains information about
a new image (bitmap)
Windows File Open dialog appears. Now, browse for the image to project. Currently, BMP, JPEG, RGB, TIFF, GIF, PNG, EMF, WMF, ICO formats are supported. Selecte image and click Open.
Depending on the projection method (from plane [default], sphere or cylinder), light red and yellow box, part of a sphere or part of a cylinder are displayed around the formed product.
Now, change the projection type which will be used (this can be changed anytime until you press Apply button):
Select rectangle, sphere or cylinder depending on the projection method to be used. Use the edit boxes on the Image manager bar to change position and rotation of the plane / sphere / cylinder, and specify the additional parameters:
Projection from plane
Projection from sphere
Projection from cylinder
and click on Edit button. Now it is possible to modify type of
projection, projection parameters and source image file name. For details see
Projection of a new image. Once the projection
definition is modified, click on Apply button. The projection procedure starts
and after some time the modified projected image is displayed.
To remove image(s):
Message box with the following warning appears: Selected images will be removed. Click Yes to remove the images, click No or Cancel to leave the images projected.
To flip image(s) vertically / horizontally:
Selected image(s) will be automatically flipped. The flipping operation can be repeated in both directions (vertically and horizontally).
To save definitions of all projections, click on the icon with
tool tip "Save definitions...". Specify projection definition file
name and click Save.
The export of the pre-distorted image was rebuild in order to
provide high quality images output. The generated images have high resolution,
suitable for quality printing.
First, click Browse button and in the Windows Save dialog, specify the image file name and select the required image file format. Currently, export to BMP, JPEG, PNG, TIFF and GIF is supported. Confirm you input in the Save dialog by clicking on Save button...
Now, in the Image export options dialog, specify the required final image height in pixels. A corresponding image width and DPI value is calculated automatically:
Enter also the exported area ( minimal and maximal z coordinate, minimal and maximal angle). The initial values cover the whole product. Angles must be within the range < -180°, + 180°>.
It is possible to specify any area. This enables export of high resolution images covering just small final product areas.
The maximal resolution of an image exported using this routine is 4096 * 4096 pixels. If you need higher resolution, use image subtivision. In both direction, every image cen be divided up to 10 subimages. This means that maximum resolution for the exported area is 40960 * 40960 pixel. If this is not enough, you would have to export subareas manually.
Click Export to create image(s).
When you get a message saying "Please enter an integer between 100 and 4096.", increase the image subdivision to get higher upper limit for resolution. For example when Image width is 6000 and Image subdivision in X is 1, increase the image subdivision to 2. The upper resolution limit is now 8192.
After export, B-SIM gives a message about the result. If the image subdivision was 1 in both direction, just one image is created, having name as specified in the Image Export Options dialog. If the image subdivision is greated than 1, multiple images are created, each with an extension in its name in for _iii_jjj (_000_000, _000_001 ... ), in order to distinguish between subimages:
Remark: This export works also for images projected using VRML files.