opencv: update to latest version of GoCV

Signed-off-by: Ron Evans <ron@hybridgroup.com>

Gopkg.lock

@@ -166,8 +166,8 @@
 [[projects]]
   name = "gocv.io/x/gocv"
   packages = ["."]
-  revision = "65d6ebdd323af342cc48ac0d146ef7ad16b33fbc"
-  version = "v0.9.0"
+  revision = "ab6d932219faf43e531eea89ef3496cdb67aa734"
+  version = "0.11.0"
 
 [[projects]]
   branch = "master"
@@ -209,6 +209,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "ce3deb9e4c499f6262bf532372e9f8fec873daa6ddb9c19d2a0ecc55d2c50da4"
+  inputs-digest = "c43dc994a8c7f2d4c032139478a57e90a174738d54033e5076e9705e13352dda"
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -75,7 +75,7 @@
 
 [[constraint]]
   name = "gocv.io/x/gocv"
-  version = "0.9.0"
+  version = "0.11.0"
 
 [[constraint]]
   branch = "master"

platforms/opencv/camera_driver.go

@@ -8,7 +8,7 @@ import (
 )
 
 type capture interface {
-	Read(img gocv.Mat) bool
+	Read(img *gocv.Mat) bool
 }
 
 const (
@@ -67,7 +67,7 @@ func (c *CameraDriver) Start() (err error) {
 	img := gocv.NewMat()
 	go func() {
 		for {
-			if ok := c.camera.Read(img); ok {
+			if ok := c.camera.Read(&img); ok {
 				c.Publish(Frame, img)
 			}
 		}

platforms/opencv/helpers_test.go

@@ -6,7 +6,7 @@ import (
 
 type testCapture struct{}
 
-func (c *testCapture) Read(img gocv.Mat) bool {
+func (c *testCapture) Read(img *gocv.Mat) bool {
 	return true
 }
 

platforms/opencv/utils.go

@@ -29,7 +29,7 @@ func DetectObjects(haar string, img gocv.Mat) []image.Rectangle {
 // DrawRectangles uses Rect array values to return image with rectangles drawn.
 func DrawRectangles(img gocv.Mat, rects []image.Rectangle, r int, g int, b int, thickness int) {
 	for _, rect := range rects {
-		gocv.Rectangle(img, rect, color.RGBA{uint8(r), uint8(g), uint8(b), 0}, thickness)
+		gocv.Rectangle(&img, rect, color.RGBA{uint8(r), uint8(g), uint8(b), 0}, thickness)
 	}
 	return
 }