In openCV, the inputFrame.rgba().size returns resolution of inputFrame or previewSize of the camera?

berak · November 6, 2023, 5:03pm

you’re right.
but please rather refer to current opencv code than to a confusing 8 year old (!) fork of it

opencv/opencv/blob/ed52f7feeaae6f0e96ee4dc36ae5f9fb4a6d959c/modules/java/generator/android/java/org/opencv/android/CameraBridgeViewBase.java#L290-L296


      
          * This method sets the maximum size that camera frame is allowed to be. When selecting
          * size - the biggest size which less or equal the size set will be selected.
          * As an example - we set setMaxFrameSize(200,200) and we have 176x152 and 320x240 sizes. The
          * preview frame will be selected with 176x152 size.
          * This method is useful when need to restrict the size of preview frame for some reason (for example for video recording)
          * @param maxWidth - the maximum width allowed for camera frame.
          * @param maxHeight - the maximum height allowed for camera frame

and also:

github.com

opencv/opencv/blob/ed52f7feeaae6f0e96ee4dc36ae5f9fb4a6d959c/modules/java/generator/android/java/org/opencv/android/CameraBridgeViewBase.java#L494C1-L495C1


      
          int maxAllowedWidth = (mMaxWidth != MAX_UNSPECIFIED && mMaxWidth < surfaceWidth)? mMaxWidth : surfaceWidth;
          int maxAllowedHeight = (mMaxHeight != MAX_UNSPECIFIED && mMaxHeight < surfaceHeight)? mMaxHeight : surfaceHeight;

is this, what you’re seeing ?

[sidenote]: no android docs here

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In openCV, the inputFrame.rgba().size returns resolution of inputFrame or previewSize of the camera?

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