IMAGE PROCESSING ARRANGEMENT
According to an example, a technique for image processing is provided, the technique including: obtaining a first image and a second image that at least partially illustrate the same real-world scene, wherein the first image includes a visible light image and the second image includes a thermal image; identifying one or more spatial portions of the second image that represent a predefined temperature range; identifying one or more spatial portions of the first image that illustrate the same portions of the real-world scene as illustrated in the identified one or more spatial portions of the second image; and deriving, based on the first image, a composite image wherein the identified one or more spatial portions of the first image are emphasized.
1 - 15 . (canceled)
16 . An image processing apparatus comprising at least one processor and at least one memory including computer program code for one or more programs, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
obtain a first image and a second image that at least partially illustrate the same real-world scene, wherein the first image comprises a visible light image and the second image comprises a thermal image;
identify one or more spatial portions of the second image that represent a predefined temperature range;
identify one or more spatial portions of the first image that illustrate the same portions of the real-world scene as illustrated in the identified one or more spatial portions of the second image; and
derive, based on the first image, a composite image wherein the identified one or more spatial portions of the first image are emphasized.
17 . An image processing apparatus according to claim 16 , wherein
said predefined temperature range is defined as a predefined range of pixel values, and
identifying the one or more spatial portions of the second image comprises identifying pixel positions of the second image having pixel values that fall within said predefined range of pixel values.
18 . An image processing apparatus according to claim 16 , wherein said predefined temperature range represents temperatures between 30 to 50 degrees Celsius.
19 . An image processing apparatus according to claim 16 , wherein identifying the one or more spatial portions of the first image comprises using a predefined spatial mapping function to convert pixel positions within said identified one or more spatial portion of the second image into corresponding pixel positions of the first image.
20 . An image processing apparatus according to claim 19 , wherein said predefined spatial mapping function comprises mapping a pixel position of the second image into a corresponding pixel position of the first image by translating the pixel position by a predefined amount in a predefined direction.
21 . An image processing apparatus according to claim 16 , wherein deriving the composite image comprises:
generating an emphasis image comprising respective visual indications in spatial positions that spatially correspond to said identified one or more spatial portions of the first image, whereas other parts of the emphasis image are transparent; and
overlaying the emphasis image on the first image.
22 . An image processing apparatus according to claim 16 , wherein deriving the composite image comprises modifying at least part of the image content of the first image in said one or more identified spatial portions of the first image in a predefined manner.
23 . An image processing apparatus according to claim 22 , wherein said modifying comprises one of the following:
replacing the image content in said one or more identified spatial portions of the first images with respective one or more visual indications,
modifying the image content in said one or more identified spatial portions of the first images in a predefined manner,
modifying the image content around said one or more identified spatial portions of the first images in a predefined manner.
24 . An image capturing apparatus comprising:
a camera assembly comprising a first imaging device for capturing visible light images and a second imaging device for capturing thermal images, the first and second cameras positioned with respect to each other such that they have at least partially overlapping respective fields of view; and
an image processing apparatus according to claim 16 , arranged to receive the first image and the second image from the first camera and the second camera, respectively.
25 . An image capturing apparatus according to claim 24 , wherein the first camera and the second camera are arranged to have their respective optical axes in parallel at a predefined distance from each other.
26 . A search camera apparatus comprising an elongated shaft, a display and an image capturing apparatus according to claim 24 , wherein
the camera assembly is arranged at one end of the elongated shaft,
the display is arranged in or close to the other end of the elongated shaft, and
the image processing apparatus is further caused to provide the composite image for rendering on the display.
27 . A method for image processing, the method comprising:
obtaining a first image and a second image that at least partially illustrate the same real-world scene, wherein the first image comprises a visible light image and the second image comprises a thermal image;
identifying one or more spatial portions of the second image that represent a predefined temperature range;
identifying one or more spatial portions of the first image that illustrate the same portions of the real-world scene as illustrated in the identified one or more spatial portions of the second image; and
deriving, based on the first image, a composite image wherein the identified one or more spatial portions of the first image are emphasized.
28 . A method according to claim 27 , comprising
using a camera assembly comprising a first camera for capturing visible light images and a second camera for capturing thermal images to capture, respectively, the first image and the second image,
wherein the first and second cameras positioned with respect to each other such that they have at least partially overlapping respective fields of view.
29 . A non-transitory computer-readable medium on which is stored a computer readable program code, the program code configured to cause performing the method according to claim 27 when run a computing apparatus.