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Aligning digital images

A digital image and digital camera technology, applied in image enhancement, image analysis, image communication, etc., can solve the problem of misalignment of panoramic images and other problems

Active Publication Date: 2021-12-10
AXIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Misalignment in the panoramic image can also be problematic in cases where the panoramic image is used for example for object detection, image content analysis, or other automatic image processing algorithms

Method used

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Embodiment Construction

[0043] The inventive concept will now be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred variants of the inventive concept are shown. However, the inventive concept may be embodied in many different forms and should not be construed as limited to the variations set forth herein; rather, these variations are provided for thoroughness and completeness, The scope is fully communicated to the technician.

[0044] In the following, reference will be made to figure 1 and 2A to 2C The example scenarios illustrated in and image 3 The flowchart illustrated in describes a method 30 for aligning digital images. exist figure 1 , the digital camera 10 is arranged to generate a panoramic image of the scene 20 . figure 1 The digital video camera 10 in the device includes a first image sensor 104a and a second image sensor 104b. It will be appreciated that the inventive concept is applicable to digital cameras including a sing...

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Abstract

The invention relates to aligning digital images. The present invention relates to a digital camera (10) and a method (30) for aligning digital images (40a, 40b). The method comprises: receiving (S300) images including a first and a second image (40a, 40b) depicting a first and a second region (200a, 200b) of a scene (20), the regions being overlapping and displaced along a first direction (X); aligning (S302) the images using a transformation; determining (S304) disparity values for an overlap (402) between the images; identifying (S306) mis-alignments by identifying (S308) blocks of pixels in the first image having a same position along a second direction (Y) and having disparity values exhibiting a variability lower than a first threshold and exhibiting an average higher than a second threshold; adjusting (S310) the transformation for the identified blocks of pixels in the first image and their matching blocks of pixels in the second image; and realigning (S312) the images using the adjusted transformation.

Description

technical field [0001] The present invention relates to a method for aligning digital images. The invention also relates to a digital video camera configured to align digital images. Background technique [0002] Panoramic imaging is a well-known technique for producing images with a magnified field of view of a depicted scene. In this technique, multiple images captured by a camera are combined and stitched into a single panoramic image. [0003] A common problem in panoramic images of scenes involves parallax. The scene is often depicted by the camera from different positions and / or orientations, which appear in the different images as a significant shift in the position of the target. When combining several images into a panoramic image, the method may be to minimize parallax at a certain distance, eg at a distance to a region of interest in the scene. This allows reducing misalignment between multiple images for this area in the scene. However, because scenes are ty...

Claims

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Application Information

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IPC IPC(8): G06T5/50G06T3/40
CPCG06T5/50G06T3/4038G06T2200/32G06T2207/10004G06T2207/20221G06T7/73G06T2207/10012G06T7/30H04N13/128H04N13/156H04N13/363G03B37/00G06T2207/20021G06T3/14G06T7/55H04N23/45H04N23/698
Inventor 维克托·埃德帕尔姆袁嵩约翰·弗波哥维克托斯·雅科韦利斯
Owner AXIS
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