Envirosight”s DigiSewer digital visual sidewall scanning (DVSS) device enhances the speed and detail at which pipeline inspection is performed. In a single day, a DigiSewer-equipped crawler can scan extensive networks of pipe at full speed. When scanning is complete, a supervisor rapidly analyzes these scans using a freeware viewer, zooming in on areas of interest for greater scrutiny and making measurements and annotations directly on the scan. DigiSewer uses patented technology to generate a high-resolution sidewall scan. The proprietary DigiSewer camera mounts to any ROVVER crawler. As the crawler advances down a pipe, the camera grabs a frame of video at established intervals. From each frame, a ring of pixels representing a fixed-width cross-section of the pipe wall is digitally extracted and unfolded into a tall rectangle by the DigiSewer CPU. As scanning progresses, the DigiSewer CPU joins these rectangles together to form a complete sidewall scan, one whose length corresponds to the length of the pipe, and whose height corresponds to the pipe’s full circumference. DigiSewer accelerates data capture. A DigiSewer-equipped ROVVER crawler can traverse an entire pipeline at full speed, capturing consistent detail from every square inch of the pipe’s interior wall. The operator never needs to slow the crawler to scout for defects; never needs to pan, tilt, or zoom the camera; and never needs to stop to type an observation. DigiSewer also streamlines inspection analysis. Unlike the videotape and DVDs generated by traditional CCTV inspection, DigiSewer scans take minutes—not hours—to review and annotate. They load directly into a freeware viewer on any PC, allowing rapid browsing of scan thumbnails, as well as detailed analysis, measurement and annotation of problem areas. And because DigiSewer scans require only a fraction the storage/transmission bandwidth of digital video, they are much easier to share and archive.