AutoCrop | Automatically crop scans of multiple images | Computer Vision library
kandi X-RAY | AutoCrop Summary
kandi X-RAY | AutoCrop Summary
AutoCrop automatically crops scans of multiple images at once.
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Top functions reviewed by kandi - BETA
- Finds squares in image
- Find squares in an image
- Remove squares touching the given border
- Removes all squares that are in the same shape
- Find the square contour of a square
- Return the cosine between two points
- Crop an image
- Get the tilt of a square
- Return the angle between two points
AutoCrop Key Features
AutoCrop Examples and Code Snippets
Community Discussions
Trending Discussions on AutoCrop
QUESTION
I previously posted how to auto fix a skewed image, is there a way to simply detect that it is skewed with image magick? I.e. is there a command that I could run on two images, one skewed and one not, and use that output as the determinant of whether it's skewed?
Thanks for any help, Kevin
...ANSWER
Answered 2022-Mar-09 at 22:30Correction to my comment above. There is a way to determine the skew angle in Imagemagick if you have regular lines of text.
Input:
QUESTION
Following this approach, deskewing works great, how do I autocrop so it the outer border comes in until it finds a mostly white contiguous rectangle, so it could be auto-cropped after deskewing?
...ANSWER
Answered 2022-Mar-05 at 20:53If you are using Imagemagick 7, you can do an extreme trim using the new -define trim:percent-background=0% to remove all the background from the image. See https://imagemagick.org/script/command-line-options.php#trim
Input:
QUESTION
The following code is: 1. Reading a folder. 2. Merging and auto-cropping images. 3. Saving the final images into png files.
...ANSWER
Answered 2021-May-15 at 14:28I suspect what you wanted to use is map instead of forEach.
map iterates over an array and returns a new one, while forEach simply iterates without returning anything.
This is why TS compiler infers that type of finalImages is void.
QUESTION
I basically have thousands of images of characters with black outlines, all of these images either have a white background or some graphic background, usually just a wood texture behind.
What I want is to create a function (opencv/pil/whatever) that will allow me to just autocrop these images, basically remove everything outside the character's outline.
On The left is the original, uncropped image, on the right is the cropped image. Is this even possible?
...ANSWER
Answered 2021-Apr-23 at 17:41Using simple methods you can get most of the way there. Assuming that the background doesn't have any black in it, we can look for the outlined character by just masking on the black color.
Then we want to fill in everything inside the outline
And finally we can just white-out everything outside of the mask
The obvious issue with this particular picture is that we end up catching the enclosed background in Mr. Bean's arm. I don't see a simple way of fixing that. We could try some color histogram matching on the area inside the mask; try to look for areas inside the mask with the same color profile as the area outside the mask, but this will be much more complicated than the currently presented code.
If the current method will work for most of your images and you can easily hand-edit the rest, please do. If it's really not acceptable as an answer, then let me know and I'll make an attempt to solve it if I have the time.
QUESTION
I am trying to change image into Greyscale and Sepia using slider control
Here is my html code
...ANSWER
Answered 2021-Feb-02 at 20:20why not use an "Angular way"?
You declare two variables
QUESTION
I have an n-dimensional numpy array of boolean values. I want to find the indices to be able to slice into the array with my slice containing all True values and as few False values as possible.
In less math terms, basically I have an image in 3D and I want to be able to autocrop it based on a given function I define (such as only care about sections labeled with green). What would be the best way to do this? n-dimensional solution preferred so I can use for all image types in the future.
...ANSWER
Answered 2021-Jan-26 at 08:39One possible way would be to use numpy.nonzero to obtain all indices of the True values and then using the minimum and maximum value in each dimension to construct the slices:
QUESTION
i try to set minimum data dimentions in cropper, it works only when aspect-ratio is hardcoded, but if i keep aspect-ratio in state, cropper throw an error:
Cannot read property 'getData' of null.
How to fix it? I'll be thankfull for every advice. Here is my code simple:
...ANSWER
Answered 2020-May-13 at 08:33try this:
QUESTION
I am stuck with this problem from resetting an image file from input type=file. This is the scenario, I set an image and then I clicked the 'Cancel' button (which means it was reset), and then I will set again the same image, it will not set. I do not know why but I think it is a bug.
Here is my code for resetting the image/form.
...ANSWER
Answered 2020-Jan-09 at 07:40You can use ref so reset file uploader value.
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