From ccc6e7876e1b1235e96b95c80d0fc9a2a3c1562f Mon Sep 17 00:00:00 2001
From: panlei <2799247126@qq.com>
Date: 星期三, 10 七月 2019 09:44:03 +0800
Subject: [PATCH] ---
---
util/image.go | 67 +++++++++++++++++++++------------
1 files changed, 43 insertions(+), 24 deletions(-)
diff --git a/util/image.go b/util/image.go
index a00e3b7..cadc71a 100644
--- a/util/image.go
+++ b/util/image.go
@@ -2,30 +2,49 @@
import (
"basic.com/pubsub/protomsg.git"
- "bytes"
- "fmt"
- "github.com/gogo/protobuf/proto"
+ "gocv.io/x/gocv"
"image"
- "image/jpeg"
- "reflect"
)
-// 鎸夊昂瀵稿幓鍒囧浘
-func Subimg(dbyte []byte,x0,y0,x1,y1 int,) protomsg.Image{
- bbb := bytes.NewBuffer(dbyte) // 蹇呴』鍔犱竴涓猙uffer 涓嶇劧娌℃湁read鏂规硶灏变細鎶ラ敊
- m, _, _ := image.Decode(bbb) // 鍥剧墖鏂囦欢瑙ｇ爜
- rgbImg := m.(*image.YCbCr)
- subImg := rgbImg.SubImage(image.Rect(x0, y0, x1, y1)) //鍥剧墖瑁佸壀x0 y0 x1 y1
- fmt.Println(reflect.TypeOf(subImg))
- //f, _ := os.Create("./test.jpg") //鍒涘缓鏂囦欢
- //defer f.Close() //鍏抽棴鏂囦欢
- emptyBuff := bytes.NewBuffer(nil) //寮�杈熶竴涓柊鐨勭┖buff
- jpeg.Encode(emptyBuff, subImg, nil) //img鍐欏叆鍒癰uff
- bytes := emptyBuff.Bytes()
- i := protomsg.Image{}
- proto.Unmarshal(bytes,&i)
- return i
- //f, _ := os.Create("./test.jpg") //鍒涘缓鏂囦欢
- //defer f.Close() //鍏抽棴鏂囦欢
- //jpeg.Encode(f, subImg, nil) //鍐欏叆鏂囦欢
-}
\ No newline at end of file
+// 鎸夊昂瀵稿幓鍒囧浘
+func SubImg(i protomsg.Image, x0, y0, x1, y1 int, ) []byte {
+ img, _ := gocv.NewMatFromBytes(int(i.Height), int(i.Width), gocv.MatTypeCV8UC3, i.Data)
+ rect := image.Rect(EnlargeSize(x0, y0, x1, y1, i))
+ region := img.Region(rect)
+ bytes, _ := gocv.IMEncode(".jpg", region)
+ return bytes
+}
+
+// 闀垮鍙樹负涓�姣斾竴锛屾瘡杈瑰悇鎵╃櫨鍒嗕箣20
+func EnlargeSize(x0, y0, x1, y1 int, i protomsg.Image) (x0_new, y0_new, x1_new, y1_new int) {
+ // 鍏堟妸闀垮鍙樹负涓�姣斾竴
+ chazhi := (y1 - y0) - (x1 - x0)
+ x0 = x0 - chazhi/2
+ if x0 < 0 {
+ x0 = 0
+ }
+ x1 = x1 + chazhi/2
+ if x1 > int(i.Width) {
+ x1 = int(i.Width)
+ }
+
+ // 鍐嶆妸姣忚竟鍚勬墿澶х櫨鍒嗕箣20
+ enlarge := float32(0.2)
+ x0_new = int((1+enlarge)*float32(x0) - enlarge*float32(x1))
+ if x0_new < 0 {
+ x0_new = 0
+ }
+ x1_new = int((1+enlarge)*float32(x1) - enlarge*float32(x0))
+ if x1_new > int(i.Width) {
+ x1_new = int(i.Width)
+ }
+ y0_new = int((1+enlarge)*float32(y0) - enlarge*float32(y1))
+ if y0_new < 0 {
+ y0_new = 0
+ }
+ y1_new = int((1+enlarge)*float32(y1) - enlarge*float32(y0))
+ if y1_new > int(i.Height) {
+ y1_new = int(i.Height)
+ }
+ return
+}
--
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