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                                                                                                                                                              您的位置>首頁>新聞動態> 機器視覺系統的主要工作流程是怎樣的?

                                                                                                                                                              發布時間: 2022-07-18    瀏覽量:23

                                                                                                                                                                完整機器視覺系統的工作流程如下:

                                                                                                                                                                計算機視覺

                                                                                                                                                                1.工件定位檢測器檢測到物體靠近攝像系統的視場中心,向圖像采集部分發送觸發脈沖。

                                                                                                                                                                2.圖像采集部分根據預先設定的程序和延時向攝像頭和照明系統發送啟動脈沖。

                                                                                                                                                                3.相機停止當前掃描并再次開始新的幀掃描,或者相機在開始脈沖到達之前處于等待狀態,并在開始脈沖到達之后開始幀掃描。

                                                                                                                                                                4.在相機開始新一幀掃描前開啟曝光機制,曝光時間可以提前設置。

                                                                                                                                                                5.另一個啟動脈沖開啟照明,照明開啟時間應與相機曝光時間相匹配。

                                                                                                                                                              工業視覺檢測

                                                                                                                                                                6.相機曝光后,正式開始一幀圖像的掃描輸出。

                                                                                                                                                                7.圖像采集部分接收模擬視頻信號并通過A/D將其數字化,或者直接接收由攝像機數字化的數字視頻數據。

                                                                                                                                                                8.圖像采集部分將數字圖像存儲在處理器或計算機的存儲器中。

                                                                                                                                                                9.處理器處理、分析和識別圖像,以獲得測量結果或邏輯控制值。

                                                                                                                                                                10.處理結果控制裝配線的動作,定位裝配線,校正運動誤差等。

                                                                                                                                                                從上面的工作流程可以看出,機器視覺是一個相對復雜的系統。由于系統監控的對象多為運動對象,因此系統與運動對象之間的動作匹配與協調就顯得尤為重要,這就對系統各部分的動作時間和處理速度提出了嚴格的要求。在一些應用領域,如機器人、飛行物制導等,對整個系統或部分系統的重量、體積、功耗都有嚴格的要求。

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