Method of monitoring digital camera capable of informing user of inadequate photographing
View Patent ↗A method of controlling a digital camera includes performing photographing of an object, determining whether the amount of exposure is appropriate and shakiness is present, and notifying a user of such information if the amount of exposure is not appropriate or shakiness is present. The determination step includes reading a focus value of the object, reading a lower limit value of a compressed file size set to correspond to the read focus value of the object at a compression rate and a resolution set by the user, and determining that the amount of exposure is not appropriate and shakiness is present if the size of a present compressed file of image data obtained from the photographing is smaller than the lower limit value of the compressed file size.
1. A method of monitoring a digital camera comprising:
determining whether an amount of exposure is inappropriate and whether shakiness is present during the photographing of an object and notifying a user of the digital camera when the amount of exposure is inappropriate or when shakiness is present, wherein determining whether the amount of exposure is inappropriate and whether shakiness is present includes:
calculating a focus value of the object;
calculating a lower limit value of a compressed file size wherein the lower limit value of the compressed file size corresponds to a focus value of the object at a compression rate and a resolution set by the user; and
determining that the amount of exposure is not appropriate and shakiness is present when the size of a compressed file of image data obtained from the photographing of the object is smaller than the lower limit value of the compressed file size.
2. A method of monitoring a digital camera comprising:
determining whether an amount of exposure is inappropriate and whether shakiness is present during the photographing of an object and notifying a user of the digital camera when the amount of exposure is inappropriate or when shakiness is present, wherein determining whether the amount of exposure is inappropriate and whether shakiness is present includes:
calculating a focus value of the object;
calculating a lower limit value of a compressed file size wherein the lower limit value of the compressed file size corresponds to a focus value of the object at a compression rate and a resolution set by the user; and
determining that the amount of exposure is not appropriate and shakiness is present when the size of a compressed file of image data obtained from the photographing of the object is smaller than the lower limit value of the compressed file size;
wherein, assuming that X is the focus value of the object, N is the number of samples, X i , is the focus value of an i-th sample, Y i is the size of a compressed file size of the i-th sample at the compression rate and resolution set by the user
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the lower limit value of the compressed file size is set as k(aX+b) in which 0<k<1.
3. The method as claimed in claim 2 , wherein k is between about 0.7 and 0.8.
4. A means for determining whether the amount of exposure is inappropriate and whether shakiness is present during the photographing of an object with a digital camera comprising:
a means for calculating a focus value of the object;
a means for calculating a lower limit value of a compressed file size wherein the lower limit value of the compressed file size corresponds to a focus value of the object at a compression rate and a resolution set by a user; and
a means for determining that the amount of exposure is not appropriate and shakiness is present when the size of a compressed file of image data obtained from the photographing of the object is smaller than the lower limit value of the compressed file size.