Acta Optica Sinica, Volume. 10, Issue 4, 365(1990)
Automatic processing of holographic interferogram with intense background
The principle of de fects inspecting in selder joints on printed circuit board (PCB) by holographic method has been described briefly in this paper. In order to processing interferogram with intense background by computer, some suitable methods have been suggested. We have accomplished image background and noise depressing, smoothing, thinning and recognition of the fringes. Satisfied rasults have been obtained.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese]. Automatic processing of holographic interferogram with intense background[J]. Acta Optica Sinica, 1990, 10(4): 365