Error using hypercube>findActualImgFileName
显示 更早的评论
I'm getting "Error using hypercube>findActualImgFileName (line 1320)" when trying to load a hyperspectral image with the hypercube function. I've opened other .hdr files before with Matlab using the hypercube function without any problems. Any ideas on what is causing the hypercube>findActualImgFileName error? I guess finding the .hdr file with the given name is not a problem, but there's something in the metadata that can't be located? There are no issues when trying to open the .hdr file with ReSe GLIMPS.
As seen in the screenshot I checked that a normal .jpg image can be found in the current folder, and also tested the hypercube with the 'indian_pines.dat' image that comes with Matlab to check if the hypercube is working as it should. No errors so far. Then in the third section I try to load my own hyperspectral image and that's when I get an error about finding the actual image file name.
采纳的回答
Walter Roberson
2021-12-14
编辑：Walter Roberson
2021-12-14
1 个投票
"Read ENVI format data into the workspace by specifying a header file that contains information about hyperspectral data. The associated ENVI binary data file must be stored in the same folder as the ENVI header file."
and see https://www.mathworks.com/help/images/ref/hypercube.html#d123e305031 which indicates that it expects a .dat file or .L1R file when you use a .hdr file.
I seem to recall that .hdr files have the name of the corresponding image data stored inside them, so I suspect the file extension is not completely important. However, I suspect that the .hdr file is saying that the image data is stored in a file that has the same name but no extension at all. In particular, I do not think the .hdr file is referring the the .hyspex file.
4 个评论
Ananas
2021-12-14
Walter Roberson
2021-12-14
It looks like the image file extension might not matter if you use the two-parameter form, hypercube(img, hdr)
When you pass in a .hdr file, hypercube() will look for a file with the same name as the .hdr but no extension; then it will look for a .dat file, then a .img file, and then a .L1R file. If it does not find any of those then it will fail with the message you showed.
If you only want the header information then you can potentially use enviinfo() -- but if you want to read the image then you need the image data.
Ananas
2021-12-14
Walter Roberson
2021-12-15
Interestingly, there is specific code in hypercube() to detect if the parameter order has been reversed by the user by checking the first parameter for ".hdr". I did not happen to check whether that was done before or after the file format was checked.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Hyperspectral Image Processing 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
