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Digital uses mega pixels ... vs film resolution is based on the area u have to record the image
please tell me ... which recent topics are going in digital image processing for research area .
With DSP you can change, modify, study the properties of signals more easily than analog signal processing. You can do modulation, encryption, decryption, encoding, decoding, multiplexing, comparing etc
Image Enhancement is trying to improvise the quality of image over received or initial image.It is a subjective process. Meaning it varies from person to person to what extent the quality has to be fined to. Techniques involved are- 1. POINT PROCESSING. A IMAGE NEGATION B LOG COMPRESSION C CONTRAST STRETCHING D GREY LEVEL SLICING(WITH OR W/O BACKGROUND CONSERVATION) E BIT PLANE SLICING 2. NEIGHBORHOOD PROCESSING A HISTOGRAM EQUALIZATION B HISTOGRAM SPECIFICATION
pre filter post filter, weister filter ,mean filter meridian filter