Image processing method and apparatus with correcting image data features

Claim 2

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the adaptive preset slope threshold with the slope detected by the detector; a correcting circuit configured to correct the image data when the comparing circuit determines that the slope is greater than the adaptive preset slope threshold by a predetermined amount; and an output unit for outputting the image data from said correcting circuit.

Claim 3

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on an analysis of the image data prior to comparing it with the slope detected by the detector, the analysis of the image data including a determination of a proportion of the text portion of the image data to the graphics portion of the image data; a correcting circuit configured to correct the image data when the comparing circuit determines that the slope is greater than the adaptive preset slope threshold by a predetermined amount; and an output unit for outputting the image data from said correcting circuit, wherein the comparing circuit is further configured to reset the preset slope threshold to a lower value when the analysis of the image data determines that the text portion of the image data is proportionally greater than the graphics portion of the image data.

Claim 4

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on an analysis of the image data prior to comparing it with the slope detected by the detector, the analysis of the image data including a determination of a proportion of the text portion of the image data to the graphics portion of the image data; a correcting circuit configured to correct the image data when the comparing circuit determines that the slope is greater than the adaptive preset slope threshold by a predetermined amount; and an output unit for outputting the image data from said correcting circuit, wherein the comparing circuit is further configured to reset the preset slope threshold to a lower value when the analysis of the image data determines that the text portion of the image data is proportionally greater than the graphics portion of the image data.

Claim 5

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on an analysis of the image data prior to comparing it with the slope detected by the detector, the analysis of the image data including a determination of a proportion of the text portion of the image data to the graphics portion of the image data; a correcting circuit configured to correct the image data when the comparing circuit determines that the slope is greater than the adaptive preset slope threshold by a predetermined amount; and an output unit for outputting the image data from said correcting circuit, wherein the comparing circuit is further configured to reset the preset slope threshold to a higher value when the analysis of the image data determines that the graphics portion of the image data is proportionally greater than the test portion of the image data.

Claim 6

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on an analysis of the image data prior to comparing it with the slope detected by the detector, the analysis of the image data including a determination of a proportion of the text portion of the image data to the graphics portion of the image data; a correcting circuit configured to correct the image data when the comparing circuit determines that the slope is greater than the adaptive preset slope threshold by a predetermined amount; and an output unit for outputting the image data from said correcting circuit, wherein the comparing circuit is further configured to reset the preset slope threshold to a higher value when the analysis of the image data determines that the graphics portion of the image data is proportionally greater than the test portion of the image data.

Claim 7

The image processing apparatus of claim 3 , wherein the preset slope threshold is reset to a value greater than a dynamic range of the image data.

Claim 8

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with a preset text image slope threshold when an analysis of the image data prior to comparing it with the slope detected by the detector determines that the image data includes more text than graphics and to compare the slope of the edge of the image data with a preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; a correcting circuit configured to correct the image data when the comparing circuit determines that the slope is greater than the preset text image slope threshold when the analysis of the image data determines that the image data includes more text than graphics and to correct the image data when the comparing circuit determines that the slope is greater than the preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; and an output unit for outputting the image data from said correcting circuit.

Claim 9

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with a preset text image slope threshold when an analysis of the image data prior to comparing it with the slope detected by the detector determines that the image data includes more text than graphics and to compare the slope of the edge of the image data with a preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; a correcting circuit configured to correct the image data when the comparing circuit determines that the slope is greater than the preset text image slope threshold when the analysis of the image data determines that the image data includes more text than graphics and to correct the image data when the comparing circuit determines that the slope is greater than the preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; and an output unit for outputting the image data from said correcting circuit.

Claim 10

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with a preselected set of at least one slope thresholds to determine a selected one of the at least one slope thresholds having a value closest to the slope detected by the detecting circuit, the preselected set of the at least one slope thresholds being set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the slope with the preselected set of the at least one slope thresholds; a correcting circuit configured to correct the image data by modifying the image data by an amount determined as a function of the slope detected by the detector; and an output unit for outputting the image data from said correcting circuit.

Claim 11

An image processing apparatus with an image data correction feature comprising: an input unit configured to receive an image data including at least one of a text portion and a graphics portion; a detector configured to detect a slope of an edge of the image data; a comparing circuit configured to compare the slope of the edge of the image data with a preselected set of at least one slope thresholds to determine a selected one of the at least one slope thresholds having a value closest to the slope detected by the detecting circuit, the preselected set of the at least one slope thresholds being set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the slope with the preselected set of the at least one slope thresholds; a correcting circuit configured to correct the image data by modifying the image data by an amount determined as a function of the slope detected by the detector; and an output unit for outputting the image data from said correcting circuit.

Claim 12

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the adaptive preset slope threshold with the slope; correcting the image data when the slope is determined in the comparing step to be greater than the adaptive preset slope threshold by a predetermined amount; and outputting the image data corrected in the correcting step.

Claim 13

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the adaptive preset slope threshold with the slope; correcting the image data when the slope is determined in the comparing step to be greater than the adaptive preset slope threshold by a predetermined amount; and outputting the image data corrected in the correcting step.

Claim 14

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on an analysis of the image data prior to comparing it with the slope detected in the detecting step, the analysis of the image data including a determination of a proportion of the text portion of the image data to the graphics portion of the image data; correcting the image data when the slope is determined in the comparing step to be greater than the adaptive preset slope threshold by a predetermined amount; and outputting the image data corrected in the correcting step, wherein the comparing step further comprises resetting the preset slope threshold to a lower value when the analysis of the image data determines that the text portion of the image data is proportionally greater than the graphics portion of the image data.

Claim 15

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on an analysis of the image data prior to comparing it with the slope detected in the detecting step, the analysis of the image data including a determination of a proportion of the text portion of the image data to the graphics portion of the image data; correcting the image data when the slope is determined in the comparing step to be greater than the adaptive preset slope threshold by a predetermined amount; and outputting the image data corrected in the correcting step, wherein the comparing step further comprises resetting the preset slope threshold to a lower value when the analysis of the image data determines that the text portion of the image data is proportionally greater than the graphics portion of the image data.

Claim 16

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on an analysis of the image data prior to comparing it with the slope detected in the detecting step, the analysis of the image data including a determination of a proportion of the text portion of the image data to the graphics portion of the image data; correcting the image data when the slope is determined in the comparing step to be greater than the adaptive preset slope threshold by a predetermined amount; and outputting the image data corrected in the correcting step, wherein the comparing step further comprises resetting the preset slope threshold to a higher value when the analysis of the image data determines that the graphics portion of the image data is proportionally greater than the text portion of the image data.

Claim 17

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on an analysis of the image data prior to comparing it with the slope detected in the detecting step, the analysis of the image data including a determination of a proportion of the text portion of the image data to the graphics portion of the image data; correcting the image data when the slope is determined in the comparing step to be greater than the adaptive preset slope threshold by a predetermined amount; and outputting the image data corrected in the correcting step, wherein the comparing step further comprises resetting the preset slope threshold to a higher value when the analysis of the image data determines that the graphics portion of the image data is proportionally greater than the text portion of the image data.

Claim 18

The method of claim 9 , wherein the comparing step further comprises resetting the preset slope threshold to a value greater than a dynamic range of the image data.

Claim 19

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with a preset text image slope threshold when an analysis of the image data prior to comparing it with the slope detected in the detecting step determines that the image data includes more text than graphics; comparing the slope of the edge of the image data with a preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; correcting the image data when it is determined that the slope is greater than the preset text image slope threshold when the analysis of the image data determines that the image data includes more text than graphics; correcting the image data when it is determined that the slope is greater than the preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; and outputting the image data corrected in the correcting step.

Claim 20

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with a preset text image slope threshold when an analysis of the image data prior to comparing it with the slope detected in the detecting step determines that the image data includes more text than graphics; comparing the slope of the edge of the image data with a preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; correcting the image data when it is determined that the slope is greater than the preset text image slope threshold when the analysis of the image data determines that the image data includes more text than graphics; correcting the image data when it is determined that the slope is greater than the preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; and outputting the image data corrected in the correcting step.

Claim 21

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with a preselected set of at least one slope thresholds to determine a selected one of the at least one slope thresholds having a value closest to the slope detected in the detecting step, the preselected set of the at least one slope thresholds being set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the slope with the preselected set of the at least one slope thresholds; correcting the image data by modifying the image data by an amount determined as a function of the slope detected in the detecting step; and outputting the image data corrected in the correcting step.

Claim 22

An image processing method with an image data correction feature comprising the steps of: inputting an image data including at least one of a text portion and a graphics portion; detecting a slope of an edge of the image data; comparing the slope of the edge of the image data with a preselected set of at least one slope thresholds to determine a selected one of the at least one slope thresholds having a value closest to the slope detected in the detecting step, the preselected set of the at least one slope thresholds being set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the slope with the preselected set of the at least one slope thresholds; correcting the image data by modifying the image data by an amount determined as a function of the slope detected in the detecting step; and outputting the image data corrected in the correcting step.

Claim 23

An image processing apparatus with an image data correction feature comprising: means for inputting an image data including at least one of a text portion and a graphics portion; means for detecting a slope of an edge of the image data; means for comparing the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the adaptive preset slope threshold with the slope; means for correcting the image data when the slope is determined by the means for comparing to be greater than the adaptive preset slope threshold by a predetermined amount; and means for outputting the image data from said means for correcting.

Claim 24

An image processing apparatus with an image data correction feature comprising: means for inputting an image data including at least one of a text portion and a graphics portion; means for detecting a slope of an edge of the image data; means for comparing the slope of the edge of the image data with an adaptive preset slope threshold, the adaptive preset slope threshold being adaptively set based on determining a proportion of the text portion of the image data to the graphics portion of the image data prior to comparing the adaptive preset slope threshold with the slope; means for correcting the image data when the slope is determined by the means for comparing to be greater than the adaptive preset slope threshold by a predetermined amount; and means for outputting the image data from said means for correcting.

Claim 25

An image processing apparatus with an image data correction feature comprising: means for inputting an image data including at least one of a text portion and a graphics portion; means for detecting a slope of an edge of the image data; means for comparing the slope of the edge of the image data with a preset text image slope threshold when an analysis of the image data prior to comparing it with the slope detected by the means for detecting determines that the image data includes more text than graphics; means for comparing the slope of the edge of the image data with a preset graphics image slope threshold when tile analysis of the image data determines that the image data includes more graphics than text; means for correcting the image data when it is determined that the slope is greater than the preset text image slope threshold when the analysis of the image data determines that the image data includes more text than graphics; means for correcting the image data when it is determined that the slope is greater than the preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; and means for outputting the image data from said means for correcting.

Claim 26

An image processing apparatus with an image data correction feature comprising: means for inputting an image data including at least one of a text portion and a graphics portion; means for detecting a slope of an edge of the image data; means for comparing the slope of the edge of the image data with a preset text image slope threshold when an analysis of the image data prior to comparing it with the slope detected by the means for detecting determines that the image data includes more text than graphics; means for comparing the slope of the edge of the image data with a preset graphics image slope threshold when tile analysis of the image data determines that the image data includes more graphics than text; means for correcting the image data when it is determined that the slope is greater than the preset text image slope threshold when the analysis of the image data determines that the image data includes more text than graphics; means for correcting the image data when it is determined that the slope is greater than the preset graphics image slope threshold when the analysis of the image data determines that the image data includes more graphics than text; and means for outputting the image data from said means for correcting.

Claim 27

An image processing apparatus with an image data correction feature comprising: means for inputting an image data including at least one of a text portion and a graphics portion; means for detecting a slope of an edge of the image data; means for comparing the slope of the edge of the image data with a preselected set of at least one slope thresholds to determine a selected one of the at least one slope thresholds having a value closest to the slope detected by the means for detecting, the preselected set of the at least one slope thresholds being set based on determining a proportion of the text portion of the image data to the, graphics portion of the image data prior to comparing the slope with the preselected set of the at least one slope thresholds; means for correcting the image data by modifying the image data by an amount determined as a function of the slope detected by the means for detecting; and means for outputting the image data from said means for correcting.

Claim 28

An image processing apparatus with an image data correction feature comprising: means for inputting an image data including at least one of a text portion and a graphics portion; means for detecting a slope of an edge of the image data; means for comparing the slope of the edge of the image data with a preselected set of at least one slope thresholds to determine a selected one of the at least one slope thresholds having a value closest to the slope detected by the means for detecting, the preselected set of the at least one slope thresholds being set based on determining a proportion of the text portion of the image data to the, graphics portion of the image data prior to comparing the slope with the preselected set of the at least one slope thresholds; means for correcting the image data by modifying the image data by an amount determined as a function of the slope detected by the means for detecting; and means for outputting the image data from said means for correcting.