The invention relates to image focus. In particular, it relates to a focus assist system that conveys focus level data to a user. There are a wide variety of different display methods, including, but not limited to, graphs, highlights, symbols, and varied levels of brightness or color.
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1. A method of providing feedback to allow focusing an image in real time, comprising: using a programmed algorithm operating on one or more processors to determine a degree of focus of a plurality of regions of an image; andproviding, on an electronic display, a visual indication of the degree of f
1. A method of providing feedback to allow focusing an image in real time, comprising: using a programmed algorithm operating on one or more processors to determine a degree of focus of a plurality of regions of an image; andproviding, on an electronic display, a visual indication of the degree of focus corresponding to each region. 2. The method of claim 1, wherein the visual indication comprises at least one waveform. 3. The method of claim 2, wherein the at least one waveform has variable intensity. 4. The method of claim 2, wherein the at least one waveform is superimposed on an image. 5. The method of claim 4, wherein the visual indication of the degree of focus for a particular region of the image is superimposed over the graphical representation of the particular region on the electronic display. 6. The method of claim 2, wherein one or more points on the waveform represent degrees of focus for corresponding portions of the image and are substantially aligned with graphical representations of the corresponding portions on the electronic display. 7. The method of claim 1, wherein the degree of focus of a region is indicated by varying the relief of that region. 8. The method of claim 1, wherein the degree of focus of a region is indicated by a geometric figure. 9. The method of claim 1, wherein each region is a line. 10. The method of claim 1, wherein the regions are described by a regular geometric pattern. 11. The method of claim 10, wherein the degree of focus of each region is indicated by varying the color of each region. 12. The method of claim 1, wherein the regions are described by edge detection. 13. The method of claim 12, wherein the degree of focus of each region is indicated by varying the brightness of each edge. 14. The method of claim 12, wherein the degree of focus of each region is indicated by varying the color of each edge. 15. The method of claim 1, wherein the visual indication of the degree of focus for a particular region of the image is visually correlated with a graphical representation of the particular region on the electronic display. 16. The method of claim 15, wherein the electronic display comprises one or more display screens of a camera and wherein both the visual indication of the degree of focus for each of the image regions and the graphical representation of each of the image regions are provided on the one or more display screens. 17. The method of claim 16, wherein the one or more display screens comprise a primary viewfinder screen and a secondary screen, the graphical representation of each of the image regions provided on the primary viewfinder screen, the visual indication of the degree of focus of each of the image regions provided on the secondary screen. 18. A method for assisting the adjusting of a focus of an image, comprising: detecting an image;applying an algorithm operating on one or more processors to determine a degree of focus of a plurality of regions of the image;providing a visual display indicative of the degree of focus corresponding to each of the plurality of regions; andupdating the visual display in substantially real time. 19. The method of claim 18, wherein the algorithm comprises an edge detection algorithm. 20. The method of claim 18, wherein the algorithm comprises blurring image data from the detected image to create a comparison image. 21. The method of claim 18, wherein providing the visual display comprises displaying focus level data for regions that have a focus level above a focus threshold. 22. The method of claim 18, wherein the visual display comprises a waveform. 23. The method of claim 22, wherein one or more points of the waveform represent degrees of focus for corresponding portions of the image and are substantially aligned with graphical representations of the corresponding portions on the electronic display. 24. The method of claim 18, wherein the plurality of regions form a grid. 25. The method of claim 18, further comprising detecting an object present in the detected image, wherein the visual display comprises an indication of the degree of focus of the object. 26. The method of claim 25, wherein detecting the object present in the detected image comprises applying a boundary extraction algorithm. 27. The method of claim 18, further comprising providing a graphical representation of the image, and wherein the visual display indicative of the degree of focus for a particular image region is visually correlated with the graphical representation of the particular image region. 28. The method of claim 27, wherein the graphical representation of the image and the visual display indicative of the degree of focus of each of the plurality of regions are provided on an electronic display of a camera. 29. The method of claim 28, wherein the electronic display screen comprises a viewfinder screen. 30. A method of providing feedback to a user of a camera to allow focusing of an image in real time, comprising: detecting an image with an image sensor;applying an algorithm to determine a focus level of a plurality of regions of the detected image;displaying the detected image; andsuperimposing a visual indication of the focus level corresponding to each of the plurality of regions over the displayed image. 31. The method of claim 30, wherein the location of the plurality of regions is configurable. 32. The method of claim 30, wherein a configurable threshold level of focus is used to determine whether to superimpose a visual indication of the focus level for a region. 33. The method of claim 30, wherein the visual indication of the focus level of a particular image region is superimposed over the portion of the displayed image corresponding to the particular image region. 34. The method of claim 30, wherein the displayed image and the superimposed visual indication of the focus level of each of the plurality of regions are displayed on an electronic display of a camera. 35. The method of claim 34, wherein the electronic display comprises a viewfinder screen. 36. An apparatus for providing feedback to allow focusing of an image in real time, comprising: an image sensor configured to detect an image;an electronic display; andone or more processors configured to execute a programmed algorithm to determine a degree of focus of a plurality of regions of the image, wherein the electronic display displays the visual indication of the degree of focus corresponding to each region. 37. The apparatus of claim 36, wherein the visual indication comprises at least one waveform. 38. The apparatus of claim 37, wherein the at least one waveform is superimposed on an image. 39. The apparatus of claim 36, wherein the regions are described by a regular geometric pattern. 40. The apparatus of claim 39, wherein the degree of focus of each region is indicated by varying the color of each region. 41. The apparatus of claim 36, wherein the regions are described by edge detection. 42. The apparatus of claim 41, wherein the degree of focus of each region is indicated by varying the brightness of each edge. 43. The apparatus of claim 41, wherein the degree of focus of each region is indicated by varying the color of each edge. 44. The apparatus of claim 36, wherein the visual indication of the degree of focus for a particular region of the image is visually correlated with a graphical representation of the particular region on the electronic display.
Krueger Roland (Wolfenbuettel DEX) Proske Joachim (Brunswick DEX) Rsner Ortwin (Munich DEX) Swarofsky Walter (Brunswick DEX), Camera having depth of focus indicating means.
Moberg Gregory O. (Rochester NY) Rhodes Wilfred D. (W. Webster NY) Surdyke Keith R. (Bergen all of NY), Columnar focusing indicator for a manually focused video camera.
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