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I just removed the css attribute for the button tag & it started working...! Now my form is working absolutely fine.!

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If you submit files you need to specify how to encode these with the enctype="multipart/form-data" attribute [mozilla-dev]:

Make sure you use the same name when assigning the cards to the TemplateResponse as when you access it in the template (use cards in both places).

Since you're using a dict, you're going to get the key of the element when iterating over it with for, not the value.

You can get all the values from the dict by iterating over the dictionary's values instead:

You could zip the string with an offset like this:

You were close with the JavaScript. this ends up being the .switch element, so you can use that as the context for the selector. Obviously you'll need to update the logic to handle all of the menu items.

I think this is what you are trying to do in Python/OpenCV. Python HSV hue is limited to range 0 to 180 so your angle needs to be scaled to that range. Similarly the magnitude is greater than 255 and also needs to be scaled to the range 0 to 255. The saturation you want would be a constant 255. I use Skimage to do the scaling. I have printed out the shape and min and max values at various places to show you these issues.

I believe the process is as follows:

• Read the input
• Convert it to gray
• Get the Sobel x and y derivatives
• Compute the magnitude and angle from the derivatives and scale mag to range 0 to 255 and angle to range 0 to 180
• Merge the angle, the magnitude and the magnitude into a 3 channel image as if HSV with angle first, then the magnitudes.
• Replace the second channel (channel 1) with 255 for the saturation
• Convert this HSV image to BGR as the result
• Save the result

Input:

Use gap in this case gap-3 property like that:

Your code could use some editing (unnecessary type calls, global variables, etc), but I don't think much of it is responsible for the erroneous result.

It looks like your sobel function takes in an img, but it only uses it in the first line to create a black (all 0s) edge_img, then only works on edge_img for the rest of the function. I think that's why you end up with a black image. Perhaps you meant to index values from img in the gx = ... and gy = ... lines?

Call the API directly to not hurt the back-end server.