how to input png or jpg stereo images for disparity map calculation

[ahsan856jalal]

When I try to input .png stereo images pair instead of .pgm, it gave me this error:
"/elas img/left_1.png img/right_1.png
Processing: img/left_1.png, img/right_1.png
ERROR: Could not read file img/left_1.png
terminate called after throwing an instance of 'pnm_error'
Aborted"
Can you help me in this regard

[kou1okada]

Read following lines:

libelas/src/main.cpp

Lines 37 to 38 in 862ee4e

	I1 = loadPGM(file_1);
	I2 = loadPGM(file_2);

Maybe there are two choices for you.

1. Convert png to pgm before processing.
2. Rewrite these lines to the function which load png file.

Good luck! 😉

[Zchappie]

Hi @kou1okada I got the same error but I did convert all rectified images to .pgm file. I converted them through changing file extensions, is this causing errors? Here is the code in python how it calls the command line (as I need to do batch processing)

for imgid in os.listdir(img_path_0_new):   
    commandLine = str(dirpath) + "/libelas/elas " + img_path_0_new + imgid + " " + img_path_1_new + imgid  
    os.system(commandLine)

[kou1okada]

To write code in the Markdown, use triple back quotes (```).
For more details, read below:

• Basic writing and formatting syntax # Quoting code
• Mastering Markdown # Examples # Code

And, your python script has no abilities to convert the image format.
Additionally, it has no abilities to change the file extension, too.
Please write correctly what you did.

[Zchappie]

Sorry I didn't make my question clear. I converted the images manually before the code. Those lines aim to call LIBELAS. And the error is same as ahsan856jalal has said.
What I want to ask is there any recommended way to do the batch image converting from png to pgm, which fulfil the requirement of LIBELAS

[kou1okada]

Maybe my post on issue #2 will be helpful.
It is using convert command of ImageMagick.