Image processor
AssigneeOlympus Corporation
InventorGen Horie
Life of this patent
Estimating the term…
Abstract
An image taken via lens system (100) and CCD (101) is converted at A/D (102) into digital signals that are then stored in buffer (103). An output of buffer (103) is connected to output block (106) via noise reduction processing block (104), edge enhancement processing block (107) and signal processing block (105) in order. Noise reduction processing block (104) separated an image signal read out of buffer (103) into multiple frequency components. Transform processing is applied to the respective separated components that are then synthesized for noise reductions.
Claims16
An image processor, characterized by comprising a frequency division means for dividing an input signal into a low-frequency component and at least one high-frequency component, a high-frequency component transform means for applying transform processing to said high-frequency component, a frequency synthesis means for synthesizing said low-frequency component with the high-frequency component to which said transform processing has been applied, a frequency characteristics setting means for setting frequency characteristics needed for an output signal, a frequency characteristics adjustment means that applies further transform processing to an output signal from said frequency synthesis means to adjust frequency characteristics of the output signal to frequency characteristics set by said frequency characteristics setting means, and a frequency division characteristics setting means for setting division characteristics at said frequency division means depending on frequency characteristics set at the frequency characteristics setting means.
An image processor, characterized by comprising a frequency division means for dividing an input signal into a low-frequency component and at least one high-frequency component, a high-frequency component transform means for applying transform processing to said high-frequency component, a frequency synthesis means for synthesizing said low-frequency component with the high-frequency component to which transform processing has been applied, a noise characteristics estimation means for estimating noise characteristics of said input signal, and a frequency division characteristics setting means for setting division characteristics at the frequency division means depending on a result of estimation at said noise characteristics estimation means.
An image processor, characterized by comprising a frequency division means for dividing an input signal into a low-frequency component and at least one high-frequency component, a high-frequency component transform means for applying transform processing to said high-frequency component, a frequency synthesis means for synthesizing the low-frequency component with the high-frequency component to which transform processing has been applied, a frequency characteristics estimation means for estimating frequency characteristics of said input signal, and a frequency division characteristics setting means for setting division characteristics at the frequency division means on the basis of a result of estimation at said frequency characteristics estimation means.
Dependencies are inferred from the claim text.