USB Video类传输图像时引起CSI采集的图像出现均匀噪点

cancel
Showing results for 
Search instead for 
Did you mean: 

USB Video类传输图像时引起CSI采集的图像出现均匀噪点

284 Views
1099789860
Contributor II

应用场景描述:使用的SDK包例程是《usb_device_video_virtual_camera》,freertos版本。原例程是将mjpeg图像通过USB上传,现在我是通过CSI驱动OV7725获取到YUV422图像,然后通过USB上传,从而实现真正的USB摄像头。

出现的问题:当电脑端未打开相机时,此时USB未传输数据时,CSI采集的图像正常(这个我是输出到LCD上看了);当打开相机后,USB将持续上传图像数据,这个过程中CSI采集的图像偶尔会出现均匀的黑色噪点。正常的图像:正常情况.jpg

            USB持续上传图像时,出现噪点的图像:

出现噪点.jpg

Labels (1)
1 Reply

177 Views
Sabina_Bruce
NXP Employee
NXP Employee

Hello ,

Hope you are doing well.

Could you please write your question in english, so that I can provide better support. 

Best Regards,

Sabina

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------