This article proposes a real-time test and verification system for full-reference automatic image quality assessment\r\nand verification of digital TV sets. Digital camera is used for acquisition of the TV screen content in order to ensure\r\nquality assessment of the content as perceived by the user. Test has been executed in three steps: image\r\nacquisition by camera, TV screen content extraction and full-reference image quality assessment. The TV screen\r\ncontent is extracted from the captured image in two steps: detection of the TV screen edge and transformation of\r\nthe TV screen content to dimensions of the reference image. Three image comparison methods are incorporated\r\nto perform full-reference image quality assessment. Reference image for quality assessment is obtained either by\r\ngrabbing the image from TV set or by capturing the TV screen content on the golden sample. Digital camera was\r\nlater replaced with DSP-based camera for image acquisition and algorithm execution which brought significant\r\nperformance improvements. The comparison methods were tested under constant and variable illumination\r\nconditions. The proposed system is used to automate the verification step on the final production line of digital TV\r\nsets. The time required for verification step decreased by a factor of 5 when using the proposed system on the\r\nfinal production line instead of a manual one.
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