Rotate camera preview to Portrait Android OpenCV Camera -

Rotate camera preview to Portrait Android OpenCV Camera -

i trying utilize opencv 2.4.3.2 create photographic camera app , opencv processing. able have multiple ui orientations, not landscape.

the problem when alter orientation portrait, image comes out sideways.

i understand i rotate input image before doing image processing (and leave orientation landscape only), fine , works, doesn't solve problem rest of ui in wrong orientation.

i have tried using this code rotate photographic camera 90deg, doesn't seem work.

mcamera.setdisplayorientation(90);

it either has no effect, or causes preview blacked out

has done opencv? class extends javacameraview.

edit

i have made improvement, have rotated image within of opencv displayed in camerabridgeviewbase.java class.

in deliver , draw frame method:

if (canvas != null) { canvas.drawcolor(0, android.graphics.porterduff.mode.clear); //canvas.drawbitmap(mcachebitmap, (canvas.getwidth() - mcachebitmap.getwidth()) / 2, (canvas.getheight() - mcachebitmap.getheight()) / 2, null); //change back upwards portrait view matrix matrix = new matrix(); matrix.pretranslate((canvas.getwidth() - mcachebitmap.getwidth()) / 2,(canvas.getheight() - mcachebitmap.getheight()) / 2); if(getresources().getconfiguration().orientation == configuration.orientation_portrait) matrix.postrotate(90f,(canvas.getwidth()) / 2,(canvas.getheight()) / 2); canvas.drawbitmap(mcachebitmap, matrix, new paint());

... basically, roatates input image so

this better, want total screen.

actually,you can create width or height math parent(full screen).

if (canvas != null) { canvas.rotate(90,0,0); scale = canvas.getwidth() / (float)bitmap.getheight(); float scale2 = canvas.getheight() / (float)bitmap.getwidth(); if(scale2 > scale){ scale = scale2; } if (scale != 0) { canvas.scale(scale, scale,0,0); } canvas.drawbitmap(bitmap, 0, -bitmap.getheight(), null);

...

also,you can create preview size larger screen.just modify scale.

android opencv android-camera