C++ 从（视频）帧Intel Realsense获取RGB值时出现指针异常

我试图用Realsense SDK从一个帧中获取不同的RGB值。这适用于带有RGB的3D深度摄影机。根据我需要使用

int i = 100, j = 100; // fetch pixel 100,100
rs2::frame rgb = ...
auto ptr = (uint8_t*)rgb.get_data();
auto stride = rgb.as<rs2::video_frame>().stride();
cout << "R=" << ptr[3*(i * stride + j)];
cout << ", G=" << ptr[3*(i * stride + j) + 1];
cout << ", B=" << ptr[3*(i * stride + j) + 2];

这是我的密码。也许它与RS2_格式_RGB8有关

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提前谢谢

步幅以字节为单位，行的长度以字节为单位，不需要与3相乘

cout << "  R= " << int(ptr[i * stride + (3*j)    ]);
cout << ", G= " << int(ptr[i * stride + (3*j) + 1]);
cout << ", B= " << int(ptr[i * stride + (3*j) + 2]);

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啊，就是这样。谢谢但是我认为'3'站在错误的位置，对吗？库特

frameset frames = pl.wait_for_frames();
frame color = frames.get_color_frame();

uint8_t* ptr = (uint8_t*)color.get_data();
int stride = color.as<video_frame>().get_stride_in_bytes();

int i = 1000, j = 1000; // fetch pixel 100,100

cout << "R=" << int(ptr[3 * (i * stride + j)]);
cout << ", G=" << int(ptr[3 * (i * stride + j) + 1]);
cout << ", B=" << int(ptr[3 * (i * stride + j) + 2]);
cout << endl;

cout << "  R= " << int(ptr[i * stride + (3*j)    ]);
cout << ", G= " << int(ptr[i * stride + (3*j) + 1]);
cout << ", B= " << int(ptr[i * stride + (3*j) + 2]);