[OpenCV] Chapter01-01 Read image from file

Read image from file

Source Code

package main
import (
 "log"

 "gocv.io/x/gocv"
)

func main() {
 imageFilePath := "../../data/Lena.png"
 mat := gocv.IMRead(imageFilePath, gocv.IMReadAnyColor)
 if mat.Empty() {
  log.Panic("Can not read Image file : ", imageFilePath)
  return
 }

 log.Println("read", imageFilePath)
 log.Println("size:", mat.Size())
 log.Println("type:", mat.Type())

 mat = gocv.IMRead(imageFilePath, gocv.IMReadGrayScale)
 if &mat == nil {
  log.Panic("Can not read Image file : ", imageFilePath)
  return
 }

 log.Println("read", imageFilePath)
 log.Println("size:", mat.Size())
 log.Println("type:", mat.Type())
}

Execute Result

$ go run chapter01-01_read_image_from_file.go 

2019/03/06 23:19:05 read ../../data/Lena.png

2019/03/06 23:19:05 size: [512 512]

2019/03/06 23:19:05 type: 16

2019/03/06 23:19:05 read ../../data/Lena.png

2019/03/06 23:19:05 size: [512 512]

2019/03/06 23:19:05 type: 0