應用影像處理檢測荔枝果皮之顏色變化

Determination of Color Changes in Litchi Fruit by Using Image Processing

柯建全(Chien-Chuan Ko) ； 黃膺任(Ying-Jen Huang) ； 艾群(Chyung Ay)

《農業機械學刊》 8卷1期 (1999/03) Pp. 59-68

https://doi.org/10.30062/JAM.199903.0006

摘要

荔枝採收後，果皮水份散失，重量減少，果皮顏色變化，品質降低，因此如何保持果皮水份不易散失是一大課題。
本研究希冀藉由色澤的變化，經由影像處理判別荔枝果皮品質的變化，探討常溫下，以影像處理技術非破壞性檢測荔枝採收後顏色的變化。經由色彩空間轉換、形態學平滑化及輪廓追蹤之影像處理技術，量測出每一顆荔枝定量參數例如：RGB、HSI平均灰度値、面積、周長等。經過四天，以未經保鮮處理之60顆荔枝試驗，結果顯示，HSI色彩模式中，平均色調値與重量變化最具相關性。

關鍵字

荔枝 ； 顏色 ； 電腦視覺

並列摘要

Decreasing of water content in harvested litchi fruits causes weight loss, color changes and low quality. Therefore, how to keep lower loss of water content in litchi fruits becomes a crucial problem. The major goal of this study was to determine the quality changes of litchi fruits with color changes by using image processing. Color changes in litchi fruits were evaluated with the noninvasive technique under fixed temperature. Quantitative parameters of every litchi fruit such as average gray scale of RGB, HSI, area and perimeter could be measured by using color space transform, morphological smoothing and contour tracing. Sixty litchi fruits without keeping fresh processing were tested during four days. Experimental results indicated the average hue value and weight changes were most correlated among HSI color model.

並列關鍵字

Litchi ； Color ； Computer vision