Image Stitching for NVIDIA Jetson/Spherical Video/Calibration Tool: Difference between revisions

Image Stitching for NVIDIA Jetson/Spherical Video/Calibration Tool (view source)

Revision as of 17:49, 11 July 2023

2,336 bytes added , 11 July 2023

→‎Calibration tool usage

Efernandez

Administrators

2,599

edits

@@ Line 109: / Line 109: @@
 [[File:Stitcher-calibrator-save-menu.png|720px|center|Save menu]]
+{{Review|We should show how the JSON file looks like and how this can be passed to the stitcher and projector. Here is an example I use:
+<syntaxhighlight lang=json>
+{
+    "projections": [
+        {
+            "0": {
+                "radius": 640.0,
+                "fov": 195.0,
+                "x_offset": 637.0,
+                "y_offset": 640.0,
+                "x_angle": 0.0,
+                "y_angle": 0,
+                "z_angle": 180,
+                "fisheye": true
+            }
+        },
+        {
+            "1": {
+                "radius": 639.0,
+                "fov": 195.0,
+                "x_offset": 641.0,
+                "y_offset": 638.0,
+                "x_angle": 0.0,
+                "y_angle": -0.8,
+                "z_angle": 180,
+                "fisheye": true
+            }
+        }
+    ],
+    "homographies": [
+        {
+            "images": {
+                "target": 1,
+                "reference": 0
+            },
+            "matrix": {
+                "h00": 1,
+                "h01": 0,
+                "h02": 1309.612371682265,
+                "h10": 0,
+                "h11": 1,
+                "h12": 0,
+                "h20": 0,
+                "h21": 0,
+                "h22": 1
+            }
+        }
+    ]
+}
+</syntaxhighlight>
+<syntaxhighlight lang=bash>
+#!/bin/bash
+S0_C_X=637
+S0_C_Y=640
+S0_rad=640
+S0_R_X=0
+S0_R_Y=0
+S0_LENS=195
+S1_C_X=641
+S1_C_Y=638
+S1_rad=639
+S1_R_X=0
+S1_R_Y=-0.8
+S1_LENS=195
+CONFIG_FILE="result.json"
+HOMOGRAPHIES="`cat $CONFIG_FILE | tr -d "\n" | tr -d " "`"
+GST_DEBUG=WARNING gst-launch-1.0 -e -v \
+	cudastitcher name=stitcher homography-list=$HOMOGRAPHIES sink_0::right=1200 sink_1::right=1227 \
+	filesrc location= ~/videos/video0-s0.mp4 ! qtdemux ! queue ! h264parse ! nvv4l2decoder ! queue ! nvvidconv ! rreqrprojector center_x=$S0_C_X center_y=$S0_C_Y radius=$S0_rad rot-y=$S0_R_Y lens=$S0_LENS name=proj0 !  queue ! stitcher.sink_0 \
+	filesrc location= ~/videos/video0-s1.mp4 ! qtdemux ! queue ! h264parse ! nvv4l2decoder ! queue ! nvvidconv !  rreqrprojector center_x=$S1_C_X center_y=$S1_C_Y radius=$S1_rad rot-y=$S1_R_Y rot-x=$S1_R_Y lens=$S1_LENS name=proj1 !  queue ! stitcher.sink_1 \
+	stitcher.  ! queue ! nvvidconv ! nvv4l2h264enc bitrate=30000000 ! h264parse ! queue !  qtmux ! filesink location=360_stitched_video.mp4
+</syntaxhighlight>
+}}
 <noinclude>
 {{Image_Stitching_for_NVIDIA_Jetson/Foot|Spherical_Video/Stitcher|Performance}}
 </noinclude>