# How can I get the bands of a .tiff UAV image using tifffile? **URL:** \ **Category:** Uncategorized\ **Created:** [October 27, 2021, 10:04am UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880 "2021-10-27T10:04:31Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 27, 2021, 10:04am UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/1 "2021-10-27T10:04:31Z")
I have a .tiff UAV image and I need to get the R,G,B bands with georeferencing using tifffile. Any idea how do I achieve this? ---
**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\ **Post date:** [October 27, 2021, 5:38pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/2 "2021-10-27T17:38:13Z")
this? [tifffile · PyPI](https://pypi.org/project/tifffile/) or that (which is the above)? [Module: external.tifffile — skimage v0.14.3 docs](https://scikit-image.org/docs/0.14.x/api/skimage.external.tifffile.html) ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 29, 2021, 12:12pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/4 "2021-10-29T12:12:00Z")
I managed to get the 3 bands of the UAV .tiff and did some calculations (such as result = Green/ Red) with rasterio. But when I try to open the new .tif image I get this error: ```auto self.img = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB) cv2.error: OpenCV(3.4.14) /tmp/pip-req-build-m7h7rfem/opencv/modules/imgproc/src/color.simd_helpers.hpp:88: error: (-2:Unspecified error) in function 'cv::impl::{anonymous}::CvtHelper::CvtHelper(cv::InputArray, cv::OutputArray, int) [with VScn = cv::impl::{anonymous}::Set<3, 4>; VDcn = cv::impl::{anonymous}::Set<3, 4>; VDepth = cv::impl::{anonymous}::Set<0, 2, 5>; cv::impl::{anonymous}::SizePolicy sizePolicy = cv::impl::::NONE; cv::InputArray = const cv::_InputArray&; cv::OutputArray = const cv::_OutputArray&]' > Invalid number of channels in input image: > 'VScn::contains(scn)' > where > 'scn' is 1 ``` Any idea how to fix this? The new .tif has only one channel! And I use PyQt to display it… ---
**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\ **Post date:** [October 29, 2021, 3:57pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/5 "2021-10-29T15:57:09Z")
that means `frame` is single-channel. why is it single-channel? why do you expect it to be `BGR`? ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 29, 2021, 4:31pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/6 "2021-10-29T16:31:42Z")
Sometimes I open RGB tif images, sometimes 4-channels tif images and sometimes 1-channel tif images…How can I achieve that? ---
**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\ **Post date:** [October 29, 2021, 5:06pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/7 "2021-10-29T17:06:08Z")
check the `.shape` (height, width, channels), do stuff according to situation ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 30, 2021, 10:32am UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/8 "2021-10-30T10:32:57Z")
Ok, so how do I make it accept 1-band tiff images? Which is the suitable flag? ---
**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\ **Post date:** [October 30, 2021, 11:59am UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/9 "2021-10-30T11:59:46Z")
> [@mike123](#): > > `COLOR_BGR2RGB` that would require the source data to be BGR, i.e. 3-channel. if you don’t have 3-channel data, you shouldn’t _expect_ that color conversion code to work. if you have 1-channel data instead, use a _different_ color conversion code… perhaps one that reads like “gray to …” ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 30, 2021, 5:08pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/10 "2021-10-30T17:08:42Z")
The code I use is from google search/github. I don’t want to do any color conversion, just show the image on the PyQt window, either 4-band, 1-band, 3-band. I do not want to do any color conversion…Any ideas? ---
**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\ **Post date:** [October 30, 2021, 5:42pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/11 "2021-10-30T17:42:40Z")
okay, so what formats does Qt like and how do you give the data to Qt? ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 30, 2021, 8:46pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/12 "2021-10-30T20:46:25Z")
> [@mike123](#): > > COLOR\_BGR2RGB 1. It reads RGBA and gray scale. I choose the file from a open file button. 2. I read the channels like this: `height, width, channels = np.shape(tifimage)` When I load 4-band .tif image everything ok. When I load 1-band .tif image I get an error when I try to read `channels` variable…because `channels` variable gets nothing…How can I avoid that? ---
**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\ **Post date:** [October 30, 2021, 9:56pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/13 "2021-10-30T21:56:14Z")
```python if len(tifimage.shape) == 2: (height, width) = tifimage.shape channels = 1 else: (height, width, channels) = tifimage.shape ``` ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 31, 2021, 12:43pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/15 "2021-10-31T12:43:55Z")
Hello! Thanks! I get this error, any ideas?? ```auto if len(tifimage.shape) == 2: AttributeError: 'NoneType' object has no attribute 'shape' ``` ---
**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\ **Post date:** [October 31, 2021, 1:14pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/16 "2021-10-31T13:14:24Z")
[the image is empty. why is it empty?](https://www.youtube.com/watch?v=tkBVDh7my9Q) ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 31, 2021, 1:24pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/17 "2021-10-31T13:24:31Z")
The image is not empty. I have just tested with QGIS and opens perfectly. However with the above code does not open, and when I check the shape (with another python code) it gives me only height and width and nothing/null for channels… ---
**Author:** ![crackwitz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/crackwitz/32/14_2.png) [@crackwitz](https://forum.opencv.org/u/crackwitz)\ **Post date:** [October 31, 2021, 1:28pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/18 "2021-10-31T13:28:28Z")
> [@mike123](#): > > ```auto > if len(tifimage.shape) == 2: > AttributeError: 'NoneType' object has no attribute 'shape' > > ``` that literally means `tifimage` was `None` only you know why. I can’t see the code. ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [October 31, 2021, 1:32pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/19 "2021-10-31T13:32:46Z")
This is the info of the .tif image I am trying to open: `Band 1 Block=7421x1 Type=Float64, ColorInterp=Gray` Do you see anything wrong? ---
**Author:** ![mike123](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@mike123](https://forum.opencv.org/u/mike123)\ **Post date:** [November 1, 2021, 6:58pm UTC](https://forum.opencv.org/t/how-can-i-get-the-bands-of-a-tiff-uav-image-using-tifffile/5880/20 "2021-11-01T18:58:28Z")
The .tif that I have the problem is `float64`. Has anything to do with this?