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Horizontal

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flip & Vertical

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flip

The augmentations Vertical Flip and Horizontal Flip are recommended when the target images are not standardized/homogeneous part (fabric, horizontal and vertical flip augmentations mirror the images horizontally or vertically and add the modified images to the training set in order to improve accuracy and robustness. 

These augmentations are recommended for situations where the orientation of the inspected products can change but it's not the goal of the inspection to check the orientation (e.g. inspection of fabric/wood/metallic surface, bulk products , eg. visual inspection of pills on a conveyor , foreign body detection in a bulk pilebelt, etc., using ‘Horizontal/Vertical Flip’ augmentation, may improve detection of defects). 

It mirrors the images vertically & horizontally and adds the modified images to the training set in order to improve accuracy and robustness. 

However, this would not be recommended for instance, when On the other hand, it's not suitable for inspecting defects on static visual inspection, such as PCB (Printed Circuit Boards), where the orientation of the parts is being checked and we e.g. want to recongize if some individual part is flipped. In this case the flip augmentations should be disabled for the model to learn the different classes correctly.

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