memory leak on openwrt

[Lucas-Yuzc]

memory leak on openwrt

Description

using the follow source to get thumb, but the process holds large memory and not release until killed by system.

source

`package imager

import ( "errors" "fmt" "image"

"gocv.io/x/gocv"

)

// Size return width height func size(img *gocv.Mat) (int, int) { return img.Cols(), img.Rows() }

// GoCvResizeRatio resize by Ratio using gocv func GoCvResizeRatio(srcpath, dstpath string, width, height int) error { src := gocv.IMRead(srcpath, gocv.IMReadColor) if src.Empty() { fmt.Println("Invalid read of Mat in Resize test") return errors.New("img IMRead empty") } defer src.Close()

fScale := 1.0
srcwidth, wrcheight := size(&src)

scaleWidth := (float64(width) / float64(srcwidth))
scaleHeight := (float64(height) / float64(wrcheight))
fmt.Println("scale width:", scaleWidth, " height:", scaleHeight)
if width > 0 && height > 0 {
	if scaleWidth > scaleHeight {
		fScale = scaleHeight
	} else {
		fScale = scaleWidth
	}
} else if width > 0 {
	fScale = scaleWidth
} else if height > 0 {
	fScale = scaleHeight
}

dst := gocv.NewMat()
defer dst.Close()

gocv.Resize(src, &dst, image.Point{}, fScale, fScale, gocv.InterpolationDefault)
if dst.Empty() {
	fmt.Println("img resize empty")
	return errors.New("img Resize empty")
}

if !gocv.IMWrite(dstpath, dst) {
	fmt.Println("img IMWrite error")
	return errors.New("img IMWrite empty")
}

return nil

} `

Your Environment

• Operating System and version: OpenWrt 18.06-SNAPSHOT
• OpenCV version used: v4.2.0
• How did you install OpenCV? using
• GoCV version used: v0.22.0
• Go version: go version go1.13.5 linux/amd64
• build configure: export CGO_CPPFLAGS="-I/opt/toolchain-aarch64_cortex-a53_gcc-8.2.0_glibc/usr/include" export CGO_LDFLAGS="-L/opt/toolchain-aarch64_cortex-a53_gcc-8.2.0_glibc/usr/lib -lopencv_calib3d -lopencv_core -lopencv_face -lopencv_videoio -lopencv_imgproc -lopencv_highgui -lopencv_imgcodecs -lopencv_objdetect -lopencv_features2d -lopencv_video -lopencv_dnn -lopencv_xfeatures2d"