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Occasional Contributor
Posts: 5
Registered: ‎10-30-2017
Accepted Solution

corrupt display of images

Hello,

We opened 5 images in Erdas Imagine. Then we create vector polygon file and drew few polygons. Then we wanted to move along images? but error occured: cannot create canvas bitmap; no memory. And images are not shown now. We tried to relaunch erdas, but had the same errors. We applied session log file. 

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Staff
Posts: 195
Registered: ‎02-12-2016

Re: corrupt display of images

Hi AruanaK,

 

The errors in this session log are also seen in your other Community post (Create a Mosaic using ERDAS IMAGINE MosaicPro). The underlying problem is that a process is running out of memory. Since MosaicPro isn’t used in this session, it’s possible that the IMAGINE process eWkspace.exe may be running out of memory. The same TIFF data is being used which makes the data a possible source of the problem.

 

You can rule out the data as a contributor to the problem by using different image data with the same IMAGINE workflow. Consider importing the TIFF to .img and use the IMG as the image source.

 

If the problem is specific to the data, a support ticket should be opened to identify any reasons why.

 

Regards,

Jeff

Staff
Posts: 503
Registered: ‎02-02-2016

Re: corrupt display of images

It could be the TIFF file causing the problem if it is a stripped TIFF instead of a tiled TIFF. If you open your TIFF files (d:/aruana/2/0039.tif, 0609.tif, 12661.tif) in the Image Metadata tool and inspect the Layer Info values under the General tab, what does it report for the Block Width and Block Height? If the values are the same, for example Block Width and Block Height both have a value of 512, then it is a tiled TIFF. But if the Block Width and Block Height values differ greatly such as Block Width = 16384 and Block Height = 8, then you probably have a stripped TIFF file. A stripped TIFF image is viewer intensive and may cause some issues with the graphics card which can result in the “unable to get bitmap for rendering” error.

 

If you have stripped TIFF files you should follow Jeff’s advice and import them to a tiled format such as IMAGINE’s native IMG format. You could also keep the data in TIFF format, but make sure it is a tiled TIFF. To ensure that the new TIFF files are tiled, open the IMAGINE Preference Editor and navigate to the File Formats > TIFF Image Files category and turn on the “Create Tiled Images” preference before importing the data.

 

Kind regards,

 

Stephen Bent

Hexagon Geospatial Support

 

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