These messages may exist in one or more coordinate frames. TransformsĪ robotics system produces many messages describing its observations of the world around it. There are a few general concepts to understand to correctly visualize your robot data. The 3D panel renders different types of visualizations into a common scene. Open the Panel settings tab in the app sidebar or click the settings icon (⚙) in the panel toolbar to configure the panel. Introductionīy publishing specifically formatted messages to topics, you can create complex 3D scenes from primitive shapes, grids, point clouds, and other renderables. Next time if you want to save an array, save the array itself.Display markers, entities, camera images, meshes, URDF models, and more in a 3D scene. It's like trying to reconstruct a model of a sculpture from a photograph of a small zoomed-in portion of the sculpture. It doesn't even have one pixel for each pixel in your original array. Since some of that photograph is occupied by stuff like the plot axes, border, etc. To continue the analogy above it would be like trying to use the photograph of the sculpture to estimate the dimensions of the sculpture so you could build it in CAD software and then 3D print it.Įven worse, though, is that your original array was 100x100, and you've saved a 100x100 photograph of a plot of it. If you're absolutely desperate you could try to figure out what gray tone represents what value in the array and then attempt to reconstruct your data from inspecting the pixel values of the image but that's not a normal way to do anything. Is there any way I can retrieve my sculpture from the picture?' This would be like saying 'I have a photograph of this sculpture. If you wanted to save the original array, you should have saved the original array, not a pictographic representation of it. Is there anyway I can transform the image back to the original array I had that I applied the imagesc function to ? Where would you store color information in a 100x100 array? How exactly do you imagine that would work? Think about what a color image is. I’ve looked everywhere but can’t seem to get the array just as a 100x100 without needing to change it to greyscale. There is no way to recover the color information once an image has been saved as grayscale.

Color images have 3 dimensions, to carry the red, green, and blue color data so if it were color you'd have a 100x100x3 array. The image itself is a save of an imagesc plot from a 2D array (100x100). I’m using the imread function to read in an image. Hi, I’ll explain my problem a bit more here.

Convert 3d image to 2d matlab