diff --git a/hgdriver/hgdev/hg_scanner_200.cpp b/hgdriver/hgdev/hg_scanner_200.cpp
index 3a42282..8e74b11 100644
--- a/hgdriver/hgdev/hg_scanner_200.cpp
+++ b/hgdriver/hgdev/hg_scanner_200.cpp
@@ -628,8 +628,40 @@ void hg_scanner_200::image_process(std::shared_ptr<std::vector<char>>& buffer)
 		//HG_LOGHG_LOG_LEVEL_DEBUG_INFO,"除色开启\r\n");
 	}
 	/////////////////////////////////////2222222222222222222222222222222222222//////////////////////////////////
-	int tableLength = sizeof(custom_gamma_val_->table)/sizeof(custom_gamma_val_->table[0]);
-	hg_imgproc::customgamma(handle,custom_gamma_,custom_gamma_val_->table,tableLength);
+	int tableLength ;//= sizeof(custom_gamma_val_->table)/sizeof(custom_gamma_val_->table[0]);
+
+	unsigned char buffer1[256 *3];
+	if (img_conf_.pixtype == COLOR_MODE_BLACK_WHITE || img_conf_.pixtype == COLOR_MODE_256_GRAY)
+		tableLength = 256;
+	else
+	{
+		tableLength = 768;
+		int index=0;
+		
+		unsigned char buf_01[256];
+		memcpy(buf_01,custom_gamma_val_->table + index,256);
+		index += 256;
+
+		unsigned char buf_02[256];
+		memcpy(buf_02,custom_gamma_val_->table + index,256);
+		index += 256;
+
+		unsigned char buf_03[256];
+		memcpy(buf_03,custom_gamma_val_->table + index,256);
+		index += 256;
+		
+		int j =0;
+		for (size_t i = 0; i < 256; i++)
+		{
+			memcpy(buffer1 + j,buf_01 + i,1);
+			memcpy(buffer1 + (++j),buf_02 + i,1);
+			memcpy(buffer1 + (++j),buf_03 + i,1);
+			++j;
+		}
+	}
+		
+
+	hg_imgproc::customgamma(handle,custom_gamma_,buffer1,tableLength);
 
 	if (img_conf_.pixtype == COLOR_MODE_24_BITS && img_conf_.hsvcorrect)
 	{
diff --git a/hgdriver/hgdev/hg_scanner_300.cpp b/hgdriver/hgdev/hg_scanner_300.cpp
index 563a5d1..41d17c6 100644
--- a/hgdriver/hgdev/hg_scanner_300.cpp
+++ b/hgdriver/hgdev/hg_scanner_300.cpp
@@ -585,8 +585,40 @@ void hg_scanner_300::image_process(std::shared_ptr<std::vector<char>>& buffer)
 		//HG_LOGHG_LOG_LEVEL_DEBUG_INFO,"除色开启\r\n");
 	}
 	/////////////////////////////////////2222222222222222222222222222222222222//////////////////////////////////
-	int tableLength = sizeof(custom_gamma_val_->table)/sizeof(custom_gamma_val_->table[0]);
-	hg_imgproc::customgamma(handle,custom_gamma_,custom_gamma_val_->table,tableLength);
+	int tableLength ;//= sizeof(custom_gamma_val_->table)/sizeof(custom_gamma_val_->table[0]);
+
+	unsigned char buffer1[256 *3];
+	if (img_conf_.pixtype == COLOR_MODE_BLACK_WHITE || img_conf_.pixtype == COLOR_MODE_256_GRAY)
+		tableLength = 256;
+	else
+	{
+		tableLength = 768;
+		int index=0;
+		
+		unsigned char buf_01[256];
+		memcpy(buf_01,custom_gamma_val_->table + index,256);
+		index += 256;
+
+		unsigned char buf_02[256];
+		memcpy(buf_02,custom_gamma_val_->table + index,256);
+		index += 256;
+
+		unsigned char buf_03[256];
+		memcpy(buf_03,custom_gamma_val_->table + index,256);
+		index += 256;
+		
+		int j =0;
+		for (size_t i = 0; i < 256; i++)
+		{
+			memcpy(buffer1 + j,buf_01 + i,1);
+			memcpy(buffer1 + (++j),buf_02 + i,1);
+			memcpy(buffer1 + (++j),buf_03 + i,1);
+			++j;
+		}
+	}
+		
+
+	hg_imgproc::customgamma(handle,custom_gamma_,buffer1,tableLength);
 
 	if (img_conf_.pixtype == COLOR_MODE_24_BITS && img_conf_.hsvcorrect)
 	{
diff --git a/hgdriver/hgdev/hg_scanner_400.cpp b/hgdriver/hgdev/hg_scanner_400.cpp
index f105211..f59697c 100644
--- a/hgdriver/hgdev/hg_scanner_400.cpp
+++ b/hgdriver/hgdev/hg_scanner_400.cpp
@@ -588,8 +588,40 @@ void hg_scanner_400::image_process(std::shared_ptr<std::vector<char>>& buffer)
 		//HG_VLOG_MINI_1(HG_LOG_LEVEL_DEBUG_INFO, "除色开启:%s\n",hg_scanner::strerr((hg_err)ret).c_str());
 	}
 	/////////////////////////////////////2222222222222222222222222222222222222//////////////////////////////////
-	int tableLength = sizeof(custom_gamma_val_->table)/sizeof(custom_gamma_val_->table[0]);
-	hg_imgproc::customgamma(handle,custom_gamma_,custom_gamma_val_->table,tableLength);
+	int tableLength ;//= sizeof(custom_gamma_val_->table)/sizeof(custom_gamma_val_->table[0]);
+
+	unsigned char buffer1[256 *3];
+	if (img_conf_.pixtype == COLOR_MODE_BLACK_WHITE || img_conf_.pixtype == COLOR_MODE_256_GRAY)
+		tableLength = 256;
+	else
+	{
+		tableLength = 768;
+		int index=0;
+		
+		unsigned char buf_01[256];
+		memcpy(buf_01,custom_gamma_val_->table + index,256);
+		index += 256;
+
+		unsigned char buf_02[256];
+		memcpy(buf_02,custom_gamma_val_->table + index,256);
+		index += 256;
+
+		unsigned char buf_03[256];
+		memcpy(buf_03,custom_gamma_val_->table + index,256);
+		index += 256;
+		
+		int j =0;
+		for (size_t i = 0; i < 256; i++)
+		{
+			memcpy(buffer1 + j,buf_01 + i,1);
+			memcpy(buffer1 + (++j),buf_02 + i,1);
+			memcpy(buffer1 + (++j),buf_03 + i,1);
+			++j;
+		}
+	}
+		
+
+	hg_imgproc::customgamma(handle,custom_gamma_,buffer1,tableLength);
 
 	if (img_conf_.pixtype == COLOR_MODE_24_BITS && img_conf_.hsvcorrect)
 	{