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Methods and systems for thermal image display

專(zhuān)利號(hào)
US10841516B2
公開(kāi)日期
2020-11-17
申請(qǐng)人
Snap-on Incorporated（US WI Kenosha）
發(fā)明人
Robert Hoevenaar; Timothy G. Ruther
IPC分類(lèi)
H04N5/33; H04N13/282; G06T3/40; G06T7/00; H04N5/225
技術(shù)領(lǐng)域
image,pixel,imaging,camera,density,first,vehicle,or,can,fourth
地域： WI WI Kenosha

摘要

An embodiment includes capturing, via a first camera, a first image having a first pixel density, a pixel of the first image corresponding to the first optical axis is substantially centered within the first image; capturing, via the second camera, a second image having a second pixel density that is greater than the first pixel density, where a pixel of the second image that corresponds to the first optical axis is off-center within the second image; processing the second image to generate a fourth image such that a pixel of the fourth image that corresponds to the first optical axis is substantially centered within the fourth image, where a pixel density of the first image is substantially equal to a pixel density of the fourth image, and where the fourth image represents a field of view that is substantially equal to field of view represented by the first image.

說(shuō)明書(shū)

BACKGROUND

Many manufactured products need to be repaired on occasion. Thermal imaging devices can be used to inspect such products by identifying thermal anomalies exhibited during use. Visible light cameras can also be useful for inspection purposes, but some difficulties can arise when attempting to use both visible light images and thermal images of such a product for inspection purposes.

SUMMARY

權(quán)利要求

1
We claim:1. An imaging device comprising:one or more processors;a first camera having a first field of view that is aligned with a first optical axis;a second camera having a second field of view that is aligned with a second optical axis that is not collinear with the first optical axis, wherein the second field of view encompasses the first field of view at an object plane that is separated from the first camera by at least a threshold distance, wherein the first field of view extends beyond the second field of view in at least one direction at an object plane that is closer to the first camera than the threshold distance;a display; anda computer readable medium storing instructions that, when executed by the one or more processors, cause the imaging device to perform functions comprising:capturing, via the first camera, a first image having a first pixel density, wherein a pixel of the first image that corresponds to the first optical axis is substantially centered within the first image;capturing, via the second camera, a second image having a second pixel density that is greater than the first pixel density, wherein a pixel of the second image that corresponds to the first optical axis is off-center within the second image;processing the first image to generate a third image; andprocessing the second image to generate a fourth image such that a pixel of the fourth image that corresponds to the first optical axis is substantially centered within the fourth image, wherein a pixel density of the third image is substantially equal to a pixel density of the fourth image, and wherein the fourth image represents a field of view that is substantially equal to a field of view represented by the third image.2. The imaging device of claim 1, wherein the first image is a thermal image that depicts intensities and wavelengths of infrared radiation.3. The imaging device of claim 2, wherein the wavelengths of infrared radiation depicted by the first image are all greater than or equal to 750 nanometers and less than or equal to 1 millimeter.4. The imaging device of claim 1, wherein a depth of field of the first camera is less than a depth of field of the second camera.5. The imaging device of claim 1, wherein the second image is a visible light image that depicts intensities and wavelengths of visible radiation that is visible to a human eye.6. The imaging device of claim 5, wherein the wavelengths of visible radiation depicted by the second image are all greater than or equal to 380 nanometers and less than or equal to 750 nanometers.7. The imaging device of claim 1, wherein the first image and the second image are captured simultaneously.8. The imaging device of claim 1, wherein processing the first image comprises upscaling the first image.9. The imaging device of claim 1, wherein processing the second image comprises downscaling the second image.10. The imaging device of claim 1, wherein processing the second image comprises shifting the second image.11. The imaging device of claim 1, wherein the second image includes image data representing a portion of the field of view, and wherein the fourth image does not include image data representing the portion of the field of view.12. The imaging device of claim 11, wherein the portion of the field of view is represented at a bottommost region of the second image.13. The imaging device of claim 1, wherein the fourth image includes a total number of pixels that is less than a total number of pixels included in the second image.14. The imaging device of claim 1, the functions further comprising processing the third image and the fourth image to generate a composite image representing intensities and wavelengths of both the infrared radiation depicted by the third image and the visible radiation depicted by the fourth image.15. The imaging device of claim 14, the functions further comprising:displaying the composite image on the display.16. The imaging device of claim 14, wherein the composite image comprises:a portion of the third image; anda portion of the fourth image, wherein the portion of the fourth image surrounds the portion of the third image, and wherein the portion of the third image is aligned with the portion of the fourth image such that the first optical axis is represented by the same pixel of the composite image.17. The imaging device of claim 14, wherein processing the third image and the fourth image to generate a composite image comprises determining a weighted average of (i) a value representing an intensity or a color corresponding to a pixel of the third image and (ii) a value representing an intensity or a color corresponding to a pixel of the fourth image.18. An imaging device comprising:one or more processors;a first camera having a first field of view that is aligned with a first optical axis;a second camera having a second field of view that is aligned with a second optical axis that is not collinear with the first optical axis, wherein the second field of view encompasses the first field of view at an object plane that is separated from the first camera by at least a threshold distance, wherein the first field of view extends beyond the second field of view in at least one direction at an object plane that is closer to the first camera than the threshold distance;a display; anda computer readable medium storing instructions that, when executed by the one or more processors, cause the imaging device to perform functions comprising:capturing, via the first camera, a first image having a first pixel density, wherein a pixel of the first image that corresponds to the first optical axis is substantially centered within the first image;capturing, via the second camera, a second image having a second pixel density that is greater than the first pixel density, wherein a pixel of the second image that corresponds to the first optical axis is off-center within the second image;processing the first image to generate a third image; andprocessing the second image to generate a fourth image such that a pixel of the fourth image that corresponds to the first optical axis is substantially centered within the fourth image, wherein a pixel density of the third image is substantially equal to a pixel density of the fourth image, and wherein the fourth image represents a field of view that is narrower than a field of view represented by the third image.19. The imaging device of claim 18, wherein at least one object in the fourth image is larger than in the third object.20. An imaging device comprising:one or more processors;a first camera having a first field of view that is aligned with a first optical axis;a second camera having a second field of view that is aligned with a second optical axis that is not collinear with the first optical axis, wherein the second field of view encompasses the first field of view at an object plane that is separated from the first camera by at least a threshold distance, wherein the first field of view extends beyond the second field of view in at least one direction at an object plane that is closer to the first camera than the threshold distance;a display; anda computer readable medium storing instructions that, when executed by the one or more processors, cause the imaging device to perform functions comprising:capturing, via the first camera, a first image having a first pixel density, wherein a pixel of the first image that corresponds to the first optical axis is substantially centered within the first image;capturing, via the second camera, a second image having a second pixel density that is greater than the first pixel density, wherein a pixel of the second image that corresponds to the first optical axis is off-center within the second image; andprocessing the second image to generate a fourth image such that a pixel of the fourth image that corresponds to the first optical axis is substantially centered within the fourth image, wherein a pixel density of the first image is substantially equal to a pixel density of the fourth image, and wherein the fourth image represents a field of view that is substantially equal to field of view represented by the first image.
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