Methods and systems for monitoring an industrial process are disclosed. Some aspects of the system arrange multiple imaging sensors to image machinery associated with an industrial process. Regions of interest within images acquired by the multiple imaging sensors may be monitored for abnormal thermal conditions, and alerts generated as needed. Alerts may also be generated if temperatures within a region of interest exceed thresholds associated with that region of interest. Each region of interest may be independently monitored and have individualized alerting thresholds. In some aspects, images from the multiple imaging sensors may be stitched together, with the regions of interest based on the stitched image. In other aspects, regions of interest within images from separate imaging sensors may be linked together so as to share at least common alerting thresholds.