![]() To see the marks for the C160 in the C310 I have to move the C310 further away by a full 3 cm. I found that in the C160 (field of view = 50°) I can see 21.6 cm of the paper and in the C310 (field of view = 60°) I can see only 19.2 cm. Then I looked at the picture from the webcam and marked the edges of the image with a pen on the paper (click for original resolution). I set both cameras next to each other facing a sheet of graph paper. Since this is contrary to what I had said from gut feeling, I did a little experiment. I found that the C160 has a field of view of 50° while the C310 has 60°, so one would think that the C310 shows a bigger area of the wall behind me. To verify this, I looked up the specs of the Logitech C160 and C310 which I both own. I was under the impression that a greater number as the FOV angle means that one can see more. Best-Known-Methods for Tuning Intel® RealSense™ D400 Depth Cameras for Best Performance Revision 1.9 New Technologies Group, Intel Corporation: Satan Clara, CA, USA, 2018.I was looking for a webcam that shows a wide area left and right of me, so I compared the field of view of several webcams. Depth Data Error Modeling of the ZED 3D Vision Sensor from Stereolabs. Application of the ZED Depth Sensor for Painting Robot Vision System Development. Stereolabs Product Portfolio and Specifications Revision 1 Stereolabs: Orsay, France, 2022. Depth Post-Processing for Intel® RealSense™ D400 Depth Cameras Revision 1.0.2 New Technologies Group, Intel Corporation: Satan Clara, CA, USA, 2018. Intel RealSense D400 Series Product Family Datasheet Document Number: 337029-005 New Technologies Group, Intel Corporation: Satan Clara, CA, USA, 2019. Figure 1 shows the RealSense depth cameras. Both the D435 and D415 cameras yield the best quality depth maps at about 60–70 cm from the scene, according to the literature. It should be noted that the D415 depth camera yields better depth measurement results when the targeted object is close to the sensor, i.e., 1 m or less. This attribute improves the performance of this depth sensor when there are no unexpected fast movements during image capturing, but the image is static. The RealSense D415 sensor has a rolling shutter. Hence, if accuracy and precision are the main requirements in an application, e.g., avoiding obstacles in robotics application and in object detection, the D415 depth sensor gives much better results. Here, the FOV of the corresponding depth sensor is (H × V × D): 65° × 40° × 70°. The D415 depth camera has a narrower FOV (H × V × D): 69° × 42° × 77° for RGB camera, and this property results in a higher density of pixels, thus increasing the resolution of the depth map. The D435 depth camera also yields better depth measurement results when the targeted objects are a few meters away from the camera itself. ![]() Furthermore, this sensor has a global shutter that ensures a better performance in situations where lighting is unsatisfactory, while capturing fast movements in a scene, and reduces the effect of blurring in images. Therefore, this sensor is often used in automotive applications and in drones. ![]() Usually, visual assessment is used in practice for the characterization of resulted depth images. These are important parameters of depth sensors, and they can be easily observed by observing the measured depth maps of a scene, or object. Accuracy is the percentage of error with respect to the measured depth, while precision is the capability of the sensors to replicate the same measure in the same conditions. As a result, this depth sensor is suitable for applications where no great accuracy and precision are required, but where a global visual experience is more significant. The FOV of the corresponding depth sensor is (H × V × D): 85° × 58° × 90°. The D435 camera has a wider FOV (H × V × D-Horizontal × Vertical × Diagonal): 91° × 65° × 100° for RGB camera, which minimizes blind, black spots in the depth map, after which the acquired depth image is pleasing to the eye. ![]()
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