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I want to concatenate vertically a lot of images. I used skimage to read images then in each iteration io read image and vconcat concatenate the new image on the old image vertically. The result of my code didn't concatenate the images, just combine the images. Any ideas how to make each image in each iteration concatenate vertically on each other?
I want to concatenate the first image and the second image vertically:
but I got this result:
data = []
if nSpectogram < 3765:
for k in range(0, 21):
path = io.imread('E:\\wavelet\\spectrograms\\paz05\\'+'spec_'+isPreictal+'_'+str(nSpectogram+1)+'_'+str(k+1)+'.png')
im_v_array = np.array(im_v)
data.append(path)
res = np.concatenate(data)
plt.imshow(res, cmap='inferno', aspect='auto', interpolation='nearest')
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Combine Images Vertically in Python If we want to combine the images vertically, we have to create a blank image with a height equal to the combined height of the two images and a width equal to the maximum width of the two images. After that, we also have to change the location of the second image on the blank image.
You can add two images with the OpenCV function, cv. add(), or simply by the numpy operation res = img1 + img2. Both images should be of same depth and type, or the second image can just be a scalar value.
Concatenate images with Python, Pillow. Pillow (PIL) can be used to concatenate (combine) multiple images vertically and horizontally. Create a background with Image.new () and paste the images with Image.paste (). There are several conceivable ways to concatenate images of different sizes. Here, three will be described.
Following is the complete Python code to combine two images vertically: Following is the visual image combining 2 images vertically: To combine two images horizontally, the height of both images should be same. If the height is different, then one of the images must be resized to make the height same.
Concatenate images using OpenCV in Python Last Updated : 28 Jul, 2020 To concatenate images vertically and horizontally with Python, cv2 library comes with two functions as: hconcat (): It is used as cv2.hconcat () to concatenate images horizontally.
Pillow (PIL) can be used to concatenate (combine) multiple images vertically and horizontally. Create a background with Image.new () and paste the images with Image.paste (). There are several ways to concatenate images of different sizes. This article describes the following cases. Concatenate images with the same height or width
Use -
merged_img = []
for i in range(3):
img = io.imread('https://machinelearningblogs.com/wp-content/uploads/2018/03/849825_XL-830x400.jpg')
merged_img.append(img)
merge = np.concatenate(merged_img)
plt.imshow(merge)
Just add all the images to a list in the for loop after reading them and pass the list to np.concatenate
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