论文信息 - DETERMINATION OF KIWIFRUIT VOLUME USING IMAGE PROCESSING

DETERMINATION OF KIWIFRUIT VOLUME USING IMAGE PROCESSING

Kiwifruit (Actinidia deliciosa) volume was determined using water displacement and image processing methods. Surface images of each kiwifruit, captured with a digital camera, were utilized in the image processing method. The volume determined from image processing method (IPM) was compared to the volume determined by the water displacement method (WDM) using the paired samples t-test and the Bland-Altman approach. The paired samples t-test results showed that the volume determined by image processing method was not significantly (P > 0.05) different from the volume measured by water displacement method. The mean difference between water displacement and image processing methods was -2.23 cm 3 (95% confidence interval: -6.71 and 2.25 cm 3 ; P = 0.304). The standard deviation of the volume differences was 8.10 cm 3 . The Bland-Altman approach also indicated that for all sized kiwifruits, image processing method satisfactorily estimated kiwifruit volume. Accordingly, image processing provides an accurate, simple, rapid and noninvasive method to estimate kiwifruit volume and can be easily implemented in monitoring growth development under various management practices and sorting of kiwifruits during post-harvest processing.

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