diff --git a/Effects/agriculture.eff b/Effects/agriculture.eff
index 7d8d6e1fd..041f920ea 100644
--- a/Effects/agriculture.eff
+++ b/Effects/agriculture.eff
@@ -244,6 +244,7 @@
 	<fragment-shader>Shaders/noise.frag</fragment-shader>
 	<fragment-shader>Shaders/hazes.frag</fragment-shader>
 	<fragment-shader>Shaders/secondary_lights.frag</fragment-shader>
+        <fragment-shader>Shaders/filters-ALS.frag</fragment-shader>
       </program>
 	  <uniform>
         <name>grain_strength</name>
@@ -424,6 +425,37 @@
         <name>landing_light3_offset</name>
         <type>float</type>
         <value><use>landing_light3_offset</use></value>
+      </uniform>
+	<!-- filtering -->
+      <uniform>
+        <name>gamma</name>
+        <type>float</type>
+        <value><use>gamma</use></value>
+      </uniform>
+      <uniform>
+        <name>brightness</name>
+        <type>float</type>
+        <value><use>brightness</use></value>
+      </uniform>
+      <uniform>
+        <name>use_night_vision</name>
+        <type>bool</type>
+        <value><use>use_night_vision</use></value>
+      </uniform>
+      <uniform>
+        <name>use_IR_vision</name>
+        <type>bool</type>
+        <value><use>use_IR_vision</use></value>
+      </uniform>
+      <uniform>
+        <name>use_filtering</name>
+        <type>bool</type>
+        <value><use>use_filtering</use></value>
+      </uniform>
+      <uniform>
+        <name>delta_T</name>
+        <type>float</type>
+        <value><use>delta_T</use></value>
       </uniform>
       <uniform>
         <name>cloudpos1_x</name>
diff --git a/Effects/urban.eff b/Effects/urban.eff
index 611291f13..6e5c60347 100644
--- a/Effects/urban.eff
+++ b/Effects/urban.eff
@@ -178,6 +178,7 @@
 				<fragment-shader>Shaders/noise.frag</fragment-shader>
 				<fragment-shader>Shaders/hazes.frag</fragment-shader>
 				<fragment-shader>Shaders/secondary_lights.frag</fragment-shader>
+				<fragment-shader>Shaders/filters-ALS.frag</fragment-shader>
 				<attribute>
 					<name>tangent</name>
 					<index>6</index>
@@ -386,11 +387,43 @@
       				  <type>float</type>
       				  <value><use>landing_light2_offset</use></value>
    			   </uniform>
-                  <uniform>
-                      <name>landing_light3_offset</name>
-                      <type>float</type>
-                      <value><use>landing_light3_offset</use></value>
-                  </uniform>
+                  	   <uniform>
+                      		<name>landing_light3_offset</name>
+                      		<type>float</type>
+                      		<value><use>landing_light3_offset</use></value>
+                  	   </uniform>
+			   <!-- filtering -->
+      			   <uniform>
+        			<name>gamma</name>
+        			<type>float</type>
+       			 	<value><use>gamma</use></value>
+      			   </uniform>
+      			   <uniform>
+        			<name>brightness</name>
+        			<type>float</type>
+        			<value><use>brightness</use></value>
+      			   </uniform>
+      			   <uniform>
+        			<name>use_night_vision</name>
+        			<type>bool</type>
+        			<value><use>use_night_vision</use></value>
+      			   </uniform>
+     			    <uniform>
+        			<name>use_IR_vision</name>
+        			<type>bool</type>
+        			<value><use>use_IR_vision</use></value>
+      			   </uniform>
+      			   <uniform>
+        			<name>use_filtering</name>
+        			<type>bool</type>
+        			<value><use>use_filtering</use></value>
+      			   </uniform>
+      			   <uniform>
+       			     	<name>delta_T</name>
+        			<type>float</type>
+        			<value><use>delta_T</use></value>
+      			   </uniform>
+			<!-- cloud shadows -->
 			   <uniform>
        				  <name>cloudpos1_x</name>
         			  <type>float</type>
@@ -736,6 +769,7 @@
 				<fragment-shader>Shaders/noise.frag</fragment-shader>
 				<fragment-shader>Shaders/hazes.frag</fragment-shader>
 				<fragment-shader>Shaders/secondary_lights.frag</fragment-shader>
+        			<fragment-shader>Shaders/filters-ALS.frag</fragment-shader>
 				<attribute>
 					<name>tangent</name>
 					<index>6</index>
@@ -856,11 +890,43 @@
       				  <type>float</type>
       				  <value><use>landing_light2_offset</use></value>
    			   </uniform>
-                  <uniform>
-                      <name>landing_light3_offset</name>
-                      <type>float</type>
-                      <value><use>landing_light3_offset</use></value>
-                  </uniform>
+                  	   <uniform>
+                      		<name>landing_light3_offset</name>
+                      		<type>float</type>
+                     		<value><use>landing_light3_offset</use></value>
+                  	   </uniform>
+			<!-- filtering -->
+      			   <uniform>
+        			<name>gamma</name>
+        			<type>float</type>
+       			 	<value><use>gamma</use></value>
+      			   </uniform>
+      			   <uniform>
+        			<name>brightness</name>
+        			<type>float</type>
+        			<value><use>brightness</use></value>
+      			   </uniform>
+      			   <uniform>
+        			<name>use_night_vision</name>
+        			<type>bool</type>
+        			<value><use>use_night_vision</use></value>
+      			   </uniform>
+     			    <uniform>
+        			<name>use_IR_vision</name>
+        			<type>bool</type>
+        			<value><use>use_IR_vision</use></value>
+      			   </uniform>
+      			   <uniform>
+        			<name>use_filtering</name>
+        			<type>bool</type>
+        			<value><use>use_filtering</use></value>
+      			   </uniform>
+      			   <uniform>
+       			     	<name>delta_T</name>
+        			<type>float</type>
+        			<value><use>delta_T</use></value>
+      			   </uniform>
+			<!-- cloud shadows -->
 			   <uniform>
        				  <name>cloudpos1_x</name>
         			  <type>float</type>
diff --git a/Shaders/agriculture-ALS.frag b/Shaders/agriculture-ALS.frag
index 14cfe8259..1a12c6f16 100644
--- a/Shaders/agriculture-ALS.frag
+++ b/Shaders/agriculture-ALS.frag
@@ -89,7 +89,7 @@ vec3 rayleigh_out_shift(in vec3 color, in float outscatter);
 vec3 get_hazeColor(in float light_arg);
 vec3 searchlight();
 vec3 landing_light(in float offset, in float offsetv);
-
+vec3 filter_combined (in vec3 color) ;
 
 
 // a fade function for procedural scales which are smaller than a pixel
@@ -650,6 +650,7 @@ fragColor.rgb = mix(hazeColor  + secondary_light * fog_backscatter(mvisibility),
 
 }
 
+fragColor.rgb = filter_combined(fragColor.rgb);
 
 gl_FragColor =  fragColor;
 
diff --git a/Shaders/urban-ALS.frag b/Shaders/urban-ALS.frag
index c796621a3..3a874d692 100644
--- a/Shaders/urban-ALS.frag
+++ b/Shaders/urban-ALS.frag
@@ -84,7 +84,7 @@ vec3 rayleigh_out_shift(in vec3 color, in float outscatter);
 vec3 get_hazeColor(in float light_arg);
 vec3 searchlight();
 vec3 landing_light(in float offset, in float offsetv);
-
+vec3 filter_combined (in vec3 color) ;
 
 void QDM(inout vec3 p, inout vec3 v)
 {
@@ -524,7 +524,7 @@ finalColor.rgb = mix( hazeColor +secondary_light * fog_backscatter(mvisibility),
 }
 
 
-
+finalColor.rgb = filter_combined(finalColor.rgb);
 
 gl_FragColor = finalColor;
 
@@ -535,4 +535,6 @@ gl_FragColor = finalColor;
     } else {
         gl_FragDepth = gl_FragCoord.z;
     }
+
+
 }
diff --git a/Shaders/urban-ALS.vert b/Shaders/urban-ALS.vert
index 8e553a4b5..9eac7739c 100644
--- a/Shaders/urban-ALS.vert
+++ b/Shaders/urban-ALS.vert
@@ -44,6 +44,8 @@ uniform float ground_scattering;
 uniform float eye_alt;
 uniform float moonlight;
 
+uniform bool use_IR_vision;
+
 uniform mat4 osg_ViewMatrixInverse;
 
 attribute vec3 tangent;//, binormal;
@@ -268,6 +270,12 @@ float shade_depth =  1.0 * smoothstep (0.6,0.95,ground_scattering) * (1.0-smooth
    light_ambient.rgb = light_ambient.rgb * (1.0 - shade_depth);
    light_diffuse.rgb = light_diffuse.rgb * (1.0 + 1.2 * shade_depth);
 
+if (use_IR_vision)
+	{
+	light_ambient.rgb = max(light_ambient.rgb, vec3 (0.5, 0.5, 0.5));
+	}
+
+
 // default lighting based on texture and material using the light we have just computed
 
  gl_FrontColor = gl_Color;