Modules imgproc src color cpp

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error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-memyuvq3\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’ #76

error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-memyuvq3\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’ #76

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When loading the data in the same way as shown in the examples with a custom dataset I get the following error message at the beginning of the first epoch (full trace):

 0%| | 0/3718 [00:00 in 4 5 model = Model(['empty', 'prostate']) # Train to predict dogs, cats, and rabbits ----> 6 model.fit(dataset) c:\users\utilizador\miniconda3\envs\venv\lib\site-packages\detecto\core.py in fit(self, dataset, val_dataset, epochs, learning_rate, momentum, weight_decay, gamma, lr_step_size, verbose) 493 494 iterable = tqdm(dataset, position=0, leave=True) if verbose else dataset --> 495 for images, targets in iterable: 496 self._convert_to_int_labels(targets) 497 images, targets = self._to_device(images, targets) c:\users\utilizador\miniconda3\envs\venv\lib\site-packages\tqdm\std.py in __iter__(self) 1128 1129 try: -> 1130 for obj in iterable: 1131 yield obj 1132 # Update and possibly print the progressbar. c:\users\utilizador\miniconda3\envs\venv\lib\site-packages\torch\utils\data\dataloader.py in __next__(self) 433 if self._sampler_iter is None: 434 self._reset() --> 435 data = self._next_data() 436 self._num_yielded += 1 437 if self._dataset_kind == _DatasetKind.Iterable and \ c:\users\utilizador\miniconda3\envs\venv\lib\site-packages\torch\utils\data\dataloader.py in _next_data(self) 473 def _next_data(self): 474 index = self._next_index() # may raise StopIteration --> 475 data = self._dataset_fetcher.fetch(index) # may raise StopIteration 476 if self._pin_memory: 477 data = _utils.pin_memory.pin_memory(data) c:\users\utilizador\miniconda3\envs\venv\lib\site-packages\torch\utils\data\_utils\fetch.py in fetch(self, possibly_batched_index) 42 def fetch(self, possibly_batched_index): 43 if self.auto_collation: ---> 44 data = [self.dataset[idx] for idx in possibly_batched_index] 45 else: 46 data = self.dataset[possibly_batched_index] c:\users\utilizador\miniconda3\envs\venv\lib\site-packages\torch\utils\data\_utils\fetch.py in (.0) 42 def fetch(self, possibly_batched_index): 43 if self.auto_collation: ---> 44 data = [self.dataset[idx] for idx in possibly_batched_index] 45 else: 46 data = self.dataset[possibly_batched_index] c:\users\utilizador\miniconda3\envs\venv\lib\site-packages\detecto\core.py in __getitem__(self, idx) 151 152 img_name = os.path.join(self._root_dir, object_entries.iloc[0, 0]) --> 153 image = read_image(img_name) 154 155 boxes = [] c:\users\utilizador\miniconda3\envs\venv\lib\site-packages\detecto\utils.py in read_image(path) 132 133 image = cv2.imread(path) --> 134 return cv2.cvtColor(image, cv2.COLOR_BGR2RGB) 135 136 error: OpenCV(4.5.1) C:\Users\appveyor\AppData\Local\Temp\1\pip-req-build-memyuvq3\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor' 

However, loading the data manually in the same way described in the trace produces no errors:

import pandas as pd import numpy as np import os from PIL import Image import cv2 df = pd.read_csv('data.csv') paths = df['filename'].tolist() image = cv2.imread(paths[0]) ok = cv2.cvtColor(image, cv2.COLOR_BGR2RGB) ok.shape (384, 384, 3) 

The images were greyscale but I converted them to BGR with PIL.

The text was updated successfully, but these errors were encountered:

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[Solved] cv2.error: OpenCV(4.5.2) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’

Hello Guys, How are you all? Hope You all Are Fine. Today I am just trying to read image through cv2 in my code and I am facing following error cv2.error: OpenCV(4.5.2) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’ in python. So Here I am Explain to you all the possible solutions here.

Without wasting your time, Let’s start This Article to Solve This Error.

How cv2.error: OpenCV(4.5.2) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’ Error Occurs ?

I am just trying to read image through cv2 in my code and I am facing following error.

cv2.error: OpenCV(4.5.2) C:\Users\ssc\AppData\Local\Temp\pip-req-build-vi271kac\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'

How To Solve cv2.error: OpenCV(4.5.2) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’ Error ?

How To Solve cv2.error: OpenCV(4.5.2) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’ Error ?

To Solve cv2.error: OpenCV(4.5.2) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’ Error Please check image path. This error usually occurs when image is not loaded correctly in any way. Second solution is You might given wrong image location. Or esle try to assign diffrent path. Third Solution is I just give full path and that was worked for me.

cv2.error: OpenCV(4.5.2) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’

To Solve cv2.error: OpenCV(4.5.2) color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function ‘cv::cvtColor’ Error Please check image path. This error usually occurs when image is not loaded correctly in any way. Second solution is You might given wrong image location. Or esle try to assign diffrent path. Third Solution is I just give full path and that was worked for me.

Solution 1: Check Image path

Please check image path. This error usually occurs when image is not loaded correctly in any way.

Here is how this error occurs.

import cv2 im = cv2.imread("WRONG IMAGE ADDRESS.jpg", 1) im = cv2.cvtColor(im, cv2.COLOR_RGB2GRAY) // Now we will face this error. cv2.error: OpenCV(4.5.2) C:\Users\ssc\AppData\Local\Temp\pip-req-build-vi271kac\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor' 

Try to giving the image address directly; something like

im = cv2.imread("D:\\your_image.jpg", 1)

Solution 2: wrong image location

You might given wrong image location. Or esle try to assign diffrent path.

im = cv2.imread("../images/car.jpg",1)

Solution 3: Give Full Path

I just give full path and that was worked for me.

im = cv2.imread("D:\My_Image\CANON80D\dang\fvrt.jpg",1) 

Summary

It’s all About this issue. Hope all solution helped you a lot. Comment below Your thoughts and your queries. Also, Comment below which solution worked for you?

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cv2.error: D:\Build\OpenCV\opencv-3.3.1\modules\imgproc\src\color.cpp:11016: error: (-215) scn == 3 || scn == 4 in function cv::cvtColor #35

cv2.error: D:\Build\OpenCV\opencv-3.3.1\modules\imgproc\src\color.cpp:11016: error: (-215) scn == 3 || scn == 4 in function cv::cvtColor #35

Comments

When I use your code,I find there is a error
First,I modified [‘-src’, ‘—source’, dest=’video_source’, type=int,……]
to [‘-src’, ‘—source’, dest=’video_source’, type=str,……]
Then I use this command «python object_detection_multithreading.py -src E:C.mp4»,but the mistake appeared.
E:\test_opencv\object_detector_app-master_PB>python object_detection_multithreading.py -src E:C.mp4
warning: Error opening file (/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:808)
warning: E:C.mp4 (/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:809)
[INFO] elapsed time: 0.00
[INFO] elapsed time: 0.00
[INFO] elapsed time: 0.00
[INFO] elapsed time: 0.00
[INFO] elapsed time: 0.00

OpenCV Error: Assertion failed (scn == 3 || scn == 4) in cv::cvtColor, file D:\Build\OpenCV\opencv-3.3.1\modules\imgproc\src\color.cpp, line 11016
Exception in thread Thread-1:
Traceback (most recent call last):
File «E:\Anaconda3\lib\threading.py», line 914, in _bootstrap_inner
self.run()
File «E:\Anaconda3\lib\threading.py», line 862, in run
self._target(*self._args, **self._kwargs)
File «object_detection_multithreading.py», line 77, in worker
frame_rgb = cv2.cvtColor(frame, cv2.COLOR_RGB2BGR)
cv2.error: D:\Build\OpenCV\opencv-3.3.1\modules\imgproc\src\color.cpp:11016: error: (-215) scn == 3 || scn == 4 in function cv::cvtColor

The text was updated successfully, but these errors were encountered:

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