All Questions
1,126
questions
2
votes
2
answers
124
views
Python - RGBA image non-zero pixels extracting - numpy mask speed up
I need to extract non-zero pixels from RGBA Image. Code below works, but because I need to deal with really huge images, some speed up will be salutary. Getting "f_mask" is the longest task. ...
- 359
0
votes
0
answers
58
views
Image location not recognized for basic python script [closed]
I am getting a file not found error for my basic python script that interprets an image as a 2d array. This is the source code
import os
from PIL import Image
import numpy as np
def image_to_array(...
- 1
0
votes
0
answers
9
views
PySpark converting ImageBytes into numpy array - R of RGB are all 0
I have a code below.
image_df = session.read.format("image").load(image_path)
# Collect the image metadata
metadata = image_df.select("image.height", "image.width", &...
- 145
0
votes
1
answer
36
views
Split a PIL image into multiple regions with a patch included in one of the split region
I need to write a python code that accepts a PIL image and split the image into M rows and N columns, such that one of the split region completely contains a patch of height H and width W starting at ...
- 1,343
0
votes
1
answer
30
views
3d numpy array output, meant to emulate an image, can't convert to Image
I am creating an autostereogram with the function make_autostereogram. It is being output as a 3d NumPy array (rows, colums, RGB).
It is then input into the Pillow function fromarray(). It has array ...
- 173
0
votes
1
answer
67
views
Circle the segmented image to the original
I am new to Python.
I have read this (How to overlay segmented image on top of main image in python) but unfortunately I cannot get to the desired result for the example provided below. The three ...
- 195
0
votes
1
answer
29
views
3d array image missing the blue values after converting to 2d array in pd dataframe
I'm trying to write code that converts an RGB image array (H,W,C) into 2D array with the format of "RGB(r,g,b)", which is then converted into a pandas DataFrame. My code is almost working ...
- 3
1
vote
1
answer
124
views
problem with python cv2 shape recognition code
I'm having problem with my code, it's supposed to get a two line input, the first line is how many shapes are in the image, and the second line is the image path.
The output should be the number of ...
- 23
1
vote
1
answer
31
views
python image slicing using np.arange
import numpy as np
img = np.zeros((321, 481, 3))
h, w = img.shape[:2]
new_h, new_w = 300, 400
top = np.random.randint(0, h-new_h)
left = np.random.randint(0, w - new_w)
print(top, left)
id_y = np....
- 11
0
votes
0
answers
47
views
convert image to resp(<class 'urllib3.response.HTTPResponse'>) type in Django
previous code :
resp = requests.get(IMAGE_API, params={'empid': employee_id}, stream=True).raw
return resp
resp type is <class 'urllib3.response.HTTPResponse'>
now i want to resize this image ...
0
votes
0
answers
153
views
How to Zero Pad in Image processing (FFT)
I am new to image processing and this question is more theoretical.
Suppose I have a 5x5 image and a 3x3 kernel. I now want to use FFT2 to convolve the image. From what I understand you would need to ...
- 31
0
votes
1
answer
151
views
How to convert BGR array to LCh array efficiently?
I have a NumPy three dimensional array of shape (height, width, 3) with float data type, the values are between 0 and 1, it represents an BGR image of resolution width*height.
And now I want to ...
- 2,933
0
votes
1
answer
52
views
How do I remove this bright line on the left edge of my picture?
I wanted to create images from bin file. After the generation I noticed the white line on the left. The created image is ok but I think that white line is reducing the dynamic range of the picture and ...
- 79
-1
votes
1
answer
49
views
writing stretch_image function in python
I have to write a function in python that gets a PIL image and stretch it to be in a rectangle shape
I've tried running this code:
def stretch_image(im3D):
width, height = im3D.size
data = np....
- 1
-1
votes
1
answer
57
views
why are numpy arrays printed like this?
Take for example generating random a 7x5x3 RGB image.
import numpy as np
import matplotlib.pyplot as plt
# Create a random 7x5x3 RGB image
image = np.random.randint(0, 256, size=(7, 5, 3), dtype=np....
- 11