opencv - 重叠原始热图像和来自 FLIR 的嵌入图像

Question

我有两张图像:一张来自 FLIR 的热图像和一张嵌入图像，我从热图像中嵌入的元数据中提取了该图像。示例:

热图像中可用的所有元数据是:

File Name: FLIR2721.jpg
File Size: 1000 kB
File Type: JPEG
File Type Extension: jpg
Mime Type: image/jpeg
Jfif Version: 1.01
Exif Byte Order: Little-endian (Intel, II)
Make: FLIR Systems AB
Model: FLIR T620
Orientation: Horizontal (normal)
X Resolution: 72
Y Resolution: 72
Resolution Unit: inches
Software: 4.8.2
Modify Date: 2017:11:29 08:34:08
Y Cb Cr Positioning: Centered
Exposure Time: 1/46
Exif Version: 220
Create Date: 2017:11:29 08:34:08
Components Configuration: -, Cr, Cb, Y
Subject Distance: 1 m
Focal Length: 41.3 mm
Image Temperature Max: 332
Image Temperature Min: 235
Flashpix Version: 100
Color Spaces: RGB
Exif Image Width: 640
Exif Image Height: 480
Digital Zoom Ratio: 1
Image Unique Id: DF9BB2EBB15922366AB9059A1D8D53A9
Gps Version Id: 2.2.0.0
Gps Altitude Ref: Above Sea Level
Gps Time Stamp: 11:48:03
Gps Satellites: 0
Gps Img Direction Ref: Magnetic North
Gps Img Direction: 160
Compression: JPEG (old-style)
Thumbnail Offset: 2172
Thumbnail Length: 5973
Emissivity: 0.75
Object Distance: 1.00 m
Reflected Apparent Temperature: 20.0 C
Atmospheric Temperature: 28.0 C
Ir Window Temperature: 20.0 C
Ir Window Transmission: 1
Relative Humidity: 60.0 %
Planck R: 115965.437
Planck B: 1417.1
Planck F: 1
Atmospheric Trans Alpha1: 0.006569
Atmospheric Trans Alpha2: 0.01262
Atmospheric Trans Beta1: -0.002276
Atmospheric Trans Beta2: -0.00667
Atmospheric Trans X: 1.9
Camera Temperature Range Max: 150.0 C
Camera Temperature Range Min: -40.0 C
Camera Temperature Max Clip: 160.0 C
Camera Temperature Min Clip: -60.0 C
Camera Temperature Max Warn: 150.0 C
Camera Temperature Min Warn: -40.0 C
Camera Temperature Max Saturated: 180.0 C
Camera Temperature Min Saturated: -60.0 C
Camera Model: FLIR T620
Camera Part Number: 55903-5022 
Camera Serial Number: 55906523
Camera Software: 25.0.0
Lens Model: FOL41
Lens Part Number: T197524
Lens Serial Number: 56702775
Field Of View: 15.0 deg
Planck O: -3949
Planck R: 20.01401533
Raw Value Range Min: 5427
Raw Value Range Max: 56178
Raw Value Median: 13350
Raw Value Range: 10060
Date Time Original: 2017:11:29 08:34:08.131+00:00
Focus Step Count: 5925
Focus Distance: 8.9 m
Frame Rate: 30
Palette Colors: 224
Above Color: 170 128 128
Below Color: 50 128 128
Overflow Color: 67 216 98
Underflow Color: 41 110 240
Isotherm1 Color: 100 128 128
Isotherm2 Color: 100 110 240
Palette Method: 0
Palette Stretch: 2
Palette File Name: \FlashBFS\system\iron.pal
Palette Name: Iron
Palette: (Binary data 672 bytes)
Raw Thermal Image Width: 640
Raw Thermal Image Height: 480
Raw Thermal Image Type: PNG
Raw Thermal Image: (Binary data 362104 bytes)
Real2 Ir: 3.7806735038757
Offset X: -35
Offset Y: -131
Pi Px1: 160
Pi Px2: 479
Pi Py1: 120
Pi Py2: 359
Gps Valid: Yes
Gps Latitude Ref: South
Gps Longitude Ref: West
Gpsdop: 0.53
Gps Map Datum: WGS84
Embedded Image Width: 2592
Embedded Image Height: 1944
Embedded Image Type: JPG
Embedded Image: (Binary data 600954 bytes)
Image Width: 640
Image Height: 480
Encoding Process: Baseline DCT, Huffman coding
Bits Per Sample: 8
Color Components: 3
Y Cb Cr Sub Sampling: YCbCr4:2:0 (2 2)
Gps Altitude: 0 m Above Sea Level
Gps Latitude: 26 deg 18' 1.14" S
Gps Longitude: 48 deg 51' 2.82" W
Gps Position: 26 deg 18' 1.14" S, 48 deg 51' 2.82" W
Image Size: 640x480
Megapixels: 0.307
Peak Spectral Sensitivity: 10.2 um
Shutter Speed: 1/46
Thumbnail Image: (Binary data 5973 bytes)
Focal Length35Efl: 41.3 mm
Category: image
Raw Header: FF D8 FF E0 00 10 4A 46 49 46 00 01 01 00 00 01 00 01 00 00 FF E1 1F BC 45 78 69 66 00 00 49 49 2A 00 08 00 00 00 0B 00 0F 01 02 00 10 00 00 00 92 00 00 00 10 01 02 00 0A 00 00 00 A2 00 00 00

我想在嵌入图像中“重叠”热图像，但我不知道该怎么做，因为热图像未与嵌入图像居中。

我试过使用 matchTemplate形成 OpenCV，但结果不是很好。

关于如何解决它有什么建议吗？

Answer 1

我认为这里是您需要的所有数据:

Raw Thermal Image Width: 640
Raw Thermal Image Height: 480
Raw Thermal Image Type: PNG
Raw Thermal Image: (Binary data 362104 bytes)
Real2 Ir: 3.7806735038757
Offset X: -35
Offset Y: -131

Real2 Ir 值看起来像原始红外图像与 JPEG 照片的缩放比例。 640x480*3.7806735038757=2420x1815 非常接近 2592x1944。因此，您只需要测试 Pi Px/y 坐标和 Offset X/Y 含义的一些组合。放大 IR 图像(或缩小 JPEG)，在图形编辑器中手动将两个图像居中并检查两个图像左上角之间的 X/Y 距离是多少。我认为它将与其中一些值相同。