![]() ![]() used the multiscale segmentation method to perform threshold segmentation for subblock images with different scales. Based on histogram estimation and shape analysis, Xu et al. However, the detection effect of the model was not good when the background pixel value and the noise pixel value were lower than the set threshold. The model using the improved Otsu method could effectively eliminate noisy pixels and noncrack pixels in crack images. He established an intelligent model for automatic crack recognition and analyses. Hoang proposed a surface crack detection in building structures using image processing technique with an improved Otsu method for image thresholding. However, the segmentation effect of this method is poor when it is applied to the image of bridge crack with complex background. used the gray difference between the crack area and the background and the gray threshold segmentation method to extract the crack. The results indicate that the proposed method is accurate, robust, and suitable for crack identification in concrete structures.ĭetection of surface cracks in building structures is using the digital image processing technique with image thresholding. The average relative error of the crack width of the proposed model is 13.2%, which is 18.6% less than that measured by using the ACTIS system. The average precision of the test set of the proposed model is 11.7% higher than that of the U-net neural network segmentation model. Finally, the widths of cracks are identified using the concrete crack binary images obtained from the improved U-net model. Thirdly, based on the U-net neural networks, an improved inception module and an Atrous Spatial Pyramid Pooling module are added in the improved U-net model. Secondly, datasets of crack images are obtained using the data augmentation technology. ![]() Firstly, a bending test of concrete beams is conducted to collect crack images. Combined with the crack digital image data obtained from bending test of reinforced concrete beams, a crack identification method for concrete structures based on improved U-net convolutional neural networks is proposed to improve the accuracy of crack identification in this article. Over the years phones have evolved beyond devices simply used to call friends and family.The traditional method for detecting cracks in concrete bridges has the disadvantages of low accuracy and weak robustness. With tons of apps, and increasingly impressive cameras, phones are becoming a multipurpose gadget that most of us do not leave home without.īut with the phone market expanding with both well-established and new rising stars, it can be hard to know which phone to choose when looking for one with the best possible camera. With technology rapidly evolving, making the right choice can be extremely daunting. No matter if you are an Apple fan or prefer an Android, there are plenty of phones out there with impressive cameras. Most of these now have impressive software to push your photography skills even further. Here are the phones with the best cameras available today. The Sony Xperia Pro-I is a fantastic smartphone for those that care about imagery. It boasts a one-inch image sensor and is slightly larger than the Google Pixel 6 Pro with an aspect ratio of 21:9.įor those of you who love photography, it's not just the impressive camera that makes the Sony Xperia Pro-I stand out. There are neat quality-of-life features that make the phone as much of a digital camera as it is a phone. For example, the side of the phone has a hole for a lanyard strap, which at first seems like a really odd choice. Actually, when you see something that you have a limited time to photograph, having your camera around your neck does speed things up, giving you time to capture that important snap. There is also a big texture button on the side of the Sony Xperia Pro-I a half-press on this button will focus your frame, while a full press will take the photo. Having a physical button for the camera might seem like a dated idea, but somehow it works, and in practice, makes taking some photos much easier than using the screen. While the cameras on the Sony Xperia Pro-I are its main selling point, it does also rock impressive dual front-facing stereo speakers that offer much more impressive sound than most people would expect from a phone. ![]() It also boasts a stunning 3840x1644 (4K) 6.5-inch OLED screen that looks amazing and does your photos justice.
0 Comments
Leave a Reply. |