Providing enhanced images for navigation
Aspects of the present disclosure relate aids for the visually impaired.
1. A method comprising:
capturing, via a camera of a wearable head device comprising a see-through display, an image comprising a surrounding environment of a user of the wearable head device;
enhancing a visibility of a first portion of the captured image corresponding to a first portion of the surrounding environment;
forgoing enhancing a visibility of a second portion of the captured image corresponding to a second portion of the surrounding environment; and
presenting, concurrently via the see-through display of the wearable head device, the enhanced first portion of the captured image and a see-through view of the second portion of the surrounding environment,
wherein presenting the enhanced first portion comprises presenting the enhanced first portion at a region of the see-through display determined based on a position of an eye of the user relative to a field of view of the see-through display.
2. The method of claim 1 , wherein enhancing a visibility of a first portion of the captured image comprises increasing a contrast of the first portion of the captured image.
3. The method of claim 1 , wherein enhancing a visibility of a first portion of the captured image comprises increasing a brightness of the first portion of the captured image.
4. The method of claim 1 , wherein enhancing a visibility of a first portion of the captured image comprises increasing a sharpness of the first portion of the captured image.
5. The method of claim 1 , wherein enhancing a visibility of a first portion of the captured image comprises increasing a color saturation of the first portion of the captured image.
6. The method of claim 1 , wherein the method is performed repeatedly as the user navigates in the surrounding environment.
7. The method of claim 1 , wherein enhancing a visibility of a first portion of the captured image comprises changing a focus distance of the first portion of the captured image.
8. The method of claim 7 , wherein the focus distance is determined based on an ophthalmic characteristic of the eye.
9. The method of claim 1 , wherein enhancing a visibility of a first portion of the enhanced image comprises adjusting one or more digital code values corresponding to one or more pixels of the first portion of the captured image.
10. The method of claim 9 , wherein enhancing the visibility of the first portion of the enhanced image further comprises increasing code values that exceed a predetermined threshold and decreasing code values that do not exceed the predetermined threshold.
11. The method of claim 9 , wherein enhancing the visibility of the first portion of the enhanced image further comprises increasing luma for pixels that have luma values above a predetermined threshold and decreasing luma for pixels that have luma values below the predetermined threshold.
12. The method of claim 11 , wherein increasing or decreasing luma comprises applying a scale factor to the one or more digital code values associated with the pixels.
13. The method of claim 10 , wherein the predetermined threshold comprises a value between 35% and 60% of a maximum code value.
14. A wearable head device comprising:
a see-through display;
a camera; and
one or more processors configured to perform a method comprising:
capturing, via the camera, an image comprising a surrounding environment of a user of the wearable head device;
enhancing a visibility of a first portion of the captured image corresponding to a first portion of the surrounding environment;
forgoing enhancing a visibility of a second portion of the captured image corresponding to a second portion of the surrounding environment; and
presenting, concurrently via the see-through display, the enhanced first portion of the captured image and a see-through view of the second portion of the surrounding environment,
wherein presenting the enhanced first portion comprises presenting the enhanced first portion at a region of the see-through display determined based on a position of an eye of the user relative to a field of view of the see-through display.
15. The wearable head device of claim 14 , wherein enhancing a visibility of a first portion of the captured image comprises increasing a contrast of the first portion of the captured image.
16. The wearable head device of claim 14 , wherein enhancing a visibility of a first portion of the captured image comprises increasing a brightness of the first portion of the captured image.
17. The wearable head device of claim 14 , wherein enhancing a visibility of a first portion of the captured image comprises increasing a color saturation of the first portion of the captured image.
18. The wearable head device of claim 14 , wherein enhancing a visibility of a first portion of the captured image comprises increasing a sharpness of the first portion of the captured image.
19. The wearable head device of claim 14 , wherein enhancing a visibility of a first portion of the captured image comprises changing a focus distance of the first portion of the captured image.
20. The wearable head device of claim 19 , wherein the focus distance is determined based on an ophthalmic characteristic of the eye.