NASA develops integrated signal and image-processing software package
Martin Rowe, Senior Technical Editor -- Test & Measurement World, 2/13/2008 6:36:00 AM
Engineers at NASA Glenn Research (Cleveland, OH) have developed the NDE Wave and Image Processor software and have made it available to US citizens. The software lets you perform analysis and processing operations on digitized waveforms, images, and series of images. You can use it to extract specific information from signals and it can help you predict or find defects in physical items.
As a signal processor, the software lets you analyze data in both the time and frequency domains. You can apply a myriad of digital filters, calculate power, find timing delays, and remove noise from signals. As an image processor, you can colorize, crop, and reorient images, denoise, enhance details, find edges of objects, make measurements, and perform image math and statistics.
The NDE Wave and Image Processor also lets you perform wavelet analysis on signals and images. “The software brings wavelet processing into an interactive environment with its commercial-grade user interfaces,” said developer Donald Roth. It comes with 40 standard wavelets that you can apply to signals and images. Help files and examples in the manual show you how to apply wavelets. Roth relied on the combined expertise of signal and image processing experts at National Instruments, NASA, and other organizations.
The software lets you open image files directly. It can open images in bmp, jpg, tif, png, and other formats. The NDE Wave and Image Processor won’t, however, open Excel files directly. You must first save data in tab-delimited text format. For signal data, The NDE Wave and Image Processor first requires the user to have the data in special format detailed in the manual. Roth has developed utilities for users who’ve needed to convert their data to the special format. He’s offered to help anyone who needs data conversion by writing a conversion utility and making it available at no charge.
While NDE Wave and Image Processor software is in the public domain, it requires the National Instruments IMAQ Vision Run-Time 8.5. When you download the NDE Wave and Image Processor, you get the runtime engine, which you can use for 30 days. After that, you must purchase a license for $299 from National Instruments. NASA has a few IMAQ Vision Run-Time licenses available at no charge.
You can obtain NDE Wave and Image Processor at technology.grc.nasa.gov/software. You need to register first and declare that you are a US citizen. You’ll then receive an e-mail providing download details. To learn more, contact Roth at Donald.J.Roth@nasa.gov.
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