Convert channel (4 to 3)

beginner · June 30, 2022, 4:39am

Hello.

stereolabs/zed-opencv/blob/master/python/zed-opencv.py

import sys
import numpy as np
import pyzed.sl as sl
import cv2

help_string = "[s] Save side by side image [d] Save Depth, [n] Change Depth format, [p] Save Point Cloud, [m] Change Point Cloud format, [q] Quit"
prefix_point_cloud = "Cloud_"
prefix_depth = "Depth_"
path = "./"

count_save = 0
mode_point_cloud = 0
mode_depth = 0
point_cloud_format_ext = ".ply"
depth_format_ext = ".png"

def point_cloud_format_name(): 
    global mode_point_cloud
    if mode_point_cloud > 3:
        mode_point_cloud = 0

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image_zed = sl.Mat(image_size.width, image_size.height, sl.MAT_TYPE.U8_C4)
depth_image_zed = sl.Mat(image_size.width, image_size.height, sl.MAT_TYPE.U8_C4)


In your code, I want to convert channel number. (4 -> 3)

I guess that I should change value 'sl.MAT_TYPE' to convert channel  

But I don't know what MAT_TYPE should be there.

Thanks in advance.

alassagne · July 1, 2022, 9:30am

Hello and thank you for reaching us out,

All sl.Mat types are documented here : https://www.stereolabs.com/docs/api/group__Core__group.html#gab12e66b9515d6772cda59cc2f7e69713
Probably you want a U8_C3 matrix.

Best regards

Antoine Lassagne
Senior Developer - ZED SDK
Stereolabs Support