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Description
Problem
😞 This is what happens whenuseGreyScale is set totrue for the Nicla Vision:
😄 This is what is observed, whenuserGreyScale is set tofalse for the Nicla Vision
This creates three problems:
- The header comment and code in CameraRawBytesVisualizer conflict in what the default colour mode is
- From a UX perspective (cc@sebromero ) the User can face additional hurdles in testing out a basic function (e.gthis forum post)
- There is no clear pathway for users to realise the problem, upon seeing the corrupt image.
Details
TheCameraCaptureRawBytes sketch is used to send a video stream over Serial to the computer. Which can then be displayed with theCameraRawBytesVisualizer Processing sketch.
A series of pre-directives, configures theIMAGE_MODE to be eitherCAMERA_RGB (Nicla Vision and GIGA boards) orCAMERA-GREYSCALE (Portenta H7 family).
ArduinoCore-mbed/libraries/Camera/examples/CameraCaptureRawBytes/CameraCaptureRawBytes.ino
Lines 3 to 19 in0504d34
| #ifdef ARDUINO_NICLA_VISION | |
| #include"gc2145.h" | |
| GC2145 galaxyCore; | |
| Cameracam(galaxyCore); | |
| #defineIMAGE_MODE CAMERA_RGB565 | |
| #elif defined(ARDUINO_PORTENTA_H7_M7) | |
| #include"hm0360.h" | |
| HM0360 himax; | |
| Cameracam(himax); | |
| #defineIMAGE_MODE CAMERA_GRAYSCALE | |
| #elif defined(ARDUINO_GIGA) | |
| #include"ov767x.h" | |
| // uncomment the correct camera in use | |
| OV7670 ov767x; | |
| // OV7675 ov767x; | |
| Cameracam(ov767x); | |
| #defineIMAGE_MODE CAMERA_RGB565 |
In the default configuration, the accompanying CameraRawBytesVisualizer sketch is configured to be compatible withCAMERA_GREYSCLE, even though the header comment states that the Processing sketch is for RGB.
ArduinoCore-mbed/libraries/Camera/extras/CameraRawBytesVisualizer/CameraRawBytesVisualizer.pde
Lines 1 to 7 in0504d34
| /* | |
| This sketch reads a raw Stream of RGB565 pixels | |
| from the Serial port and displays the frame on | |
| the window. | |
| Use with the Examples -> CameraCaptureRawBytes Arduino sketch. | |
| This example code is in the public domain. | |
| */ |
ArduinoCore-mbed/libraries/Camera/extras/CameraRawBytesVisualizer/CameraRawBytesVisualizer.pde
Lines 19 to 20 in0504d34
| // Must match the image mode in the Arduino sketch | |
| finalboolean useGrayScale=true; |
Thanks@marqdevx ,@Hannes7eicher and@jacobhylen for letting me pick your brains 🧠