Title page

Rosenfeld Digitization

Digitization level 3

Two problems

Kinds of description

Theorems and proofs

Necessary conditions

Four restrictions

Definition 1

Definition 2

Definition 3

Definition 4

Lemma

Definition 5

Digitization level *k*

Proposition

Definition 6

Definition 7

Definition 8

Theorem (necessary condition)

Necessary condition - construction

Sufficient conditions

Theorem (sufficient condition)

Proposition for recognition

Any questions?